diff options
Diffstat (limited to 'release/src/router/busybox/include/libbb.h')
| -rw-r--r-- | release/src/router/busybox/include/libbb.h | 1735 |
1 files changed, 1414 insertions, 321 deletions
diff --git a/release/src/router/busybox/include/libbb.h b/release/src/router/busybox/include/libbb.h index ddc93c18..2497ffe6 100644 --- a/release/src/router/busybox/include/libbb.h +++ b/release/src/router/busybox/include/libbb.h @@ -2,77 +2,194 @@ /* * Busybox main internal header file * - * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License as published by - * the Free Software Foundation; either version 2 of the License, or - * (at your option) any later version. - * - * This program is distributed in the hope that it will be useful, - * but WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU - * General Public License for more details. - * - * You should have received a copy of the GNU General Public License - * along with this program; if not, write to the Free Software - * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA - * - * Based in part on code from sash, Copyright (c) 1999 by David I. Bell + * Based in part on code from sash, Copyright (c) 1999 by David I. Bell * Permission has been granted to redistribute this code under the GPL. * + * Licensed under the GPL version 2, see the file LICENSE in this tarball. */ -#ifndef __LIBCONFIG_H__ -#define __LIBCONFIG_H__ 1 +#ifndef LIBBB_H +#define LIBBB_H 1 + +#include "platform.h" +#include <ctype.h> +#include <dirent.h> +#include <errno.h> +#include <fcntl.h> +#include <inttypes.h> +#include <netdb.h> +#include <setjmp.h> +#include <signal.h> #include <stdio.h> +#include <stdlib.h> #include <stdarg.h> +#include <stddef.h> +#include <string.h> +#include <sys/poll.h> +#include <sys/ioctl.h> +#include <sys/mman.h> +#include <sys/socket.h> #include <sys/stat.h> +#include <sys/time.h> #include <sys/types.h> +#include <sys/wait.h> #include <termios.h> +#include <time.h> +#include <unistd.h> +#include <utime.h> +/* Try to pull in PATH_MAX */ +#include <limits.h> +#include <sys/param.h> +#ifndef PATH_MAX +#define PATH_MAX 256 +#endif -#include <netdb.h> +#ifdef HAVE_MNTENT_H +#include <mntent.h> +#endif -#ifdef DMALLOC -#include <dmalloc.h> +#ifdef HAVE_SYS_STATFS_H +#include <sys/statfs.h> #endif -#include <features.h> +#if ENABLE_SELINUX +#include <selinux/selinux.h> +#include <selinux/context.h> +#include <selinux/flask.h> +#include <selinux/av_permissions.h> +#endif -#include "config.h" -#ifdef CONFIG_SELINUX -#include <proc_secure.h> +#if ENABLE_LOCALE_SUPPORT +#include <locale.h> +#else +#define setlocale(x,y) ((void)0) #endif -#include "pwd_.h" -#include "grp_.h" -#ifdef CONFIG_FEATURE_SHADOWPASSWDS -#include "shadow_.h" +#ifdef DMALLOC +#include <dmalloc.h> #endif -#ifdef CONFIG_FEATURE_SHA1_PASSWORDS -# include "sha1.h" + +#include <pwd.h> +#include <grp.h> +#if ENABLE_FEATURE_SHADOWPASSWDS +# include <shadow.h> #endif -/* Compatability with ANSI C */ -#ifndef inline -# define inline +/* Some libc's forget to declare these, do it ourself */ + +extern char **environ; +#if defined(__GLIBC__) && __GLIBC__ < 2 +int vdprintf(int d, const char *format, va_list ap); #endif +/* klogctl is in libc's klog.h, but we cheat and not #include that */ +int klogctl(int type, char *b, int len); +/* This is declared here rather than #including <libgen.h> in order to avoid + * confusing the two versions of basename. See the dirname/basename man page + * for details. */ +char *dirname(char *path); +/* Include our own copy of struct sysinfo to avoid binary compatibility + * problems with Linux 2.4, which changed things. Grumble, grumble. */ +struct sysinfo { + long uptime; /* Seconds since boot */ + unsigned long loads[3]; /* 1, 5, and 15 minute load averages */ + unsigned long totalram; /* Total usable main memory size */ + unsigned long freeram; /* Available memory size */ + unsigned long sharedram; /* Amount of shared memory */ + unsigned long bufferram; /* Memory used by buffers */ + unsigned long totalswap; /* Total swap space size */ + unsigned long freeswap; /* swap space still available */ + unsigned short procs; /* Number of current processes */ + unsigned short pad; /* Padding needed for m68k */ + unsigned long totalhigh; /* Total high memory size */ + unsigned long freehigh; /* Available high memory size */ + unsigned int mem_unit; /* Memory unit size in bytes */ + char _f[20 - 2 * sizeof(long) - sizeof(int)]; /* Padding: libc5 uses this.. */ +}; +int sysinfo(struct sysinfo* info); -/* Convenience macros to test the version of gcc. */ -#if defined __GNUC__ && defined __GNUC_MINOR__ -# define __GNUC_PREREQ(maj, min) \ - ((__GNUC__ << 16) + __GNUC_MINOR__ >= ((maj) << 16) + (min)) -#else -# define __GNUC_PREREQ(maj, min) 0 + +/* Make all declarations hidden (-fvisibility flag only affects definitions) */ +/* (don't include system headers after this until corresponding pop!) */ +PUSH_AND_SET_FUNCTION_VISIBILITY_TO_HIDDEN + + +#if ENABLE_USE_BB_PWD_GRP +# include "pwd_.h" +# include "grp_.h" +#endif +#if ENABLE_FEATURE_SHADOWPASSWDS +# if ENABLE_USE_BB_SHADOW +# include "shadow_.h" +# endif #endif -/* __restrict is known in EGCS 1.2 and above. */ -#if !__GNUC_PREREQ (2,92) -# define __restrict /* Ignore */ +/* Tested to work correctly with all int types (IIRC :]) */ +#define MAXINT(T) (T)( \ + ((T)-1) > 0 \ + ? (T)-1 \ + : (T)~((T)1 << (sizeof(T)*8-1)) \ + ) + +#define MININT(T) (T)( \ + ((T)-1) > 0 \ + ? (T)0 \ + : ((T)1 << (sizeof(T)*8-1)) \ + ) + +/* Large file support */ +/* Note that CONFIG_LFS=y forces bbox to be built with all common ops + * (stat, lseek etc) mapped to "largefile" variants by libc. + * Practically it means that open() automatically has O_LARGEFILE added + * and all filesize/file_offset parameters and struct members are "large" + * (in today's world - signed 64bit). For full support of large files, + * we need a few helper #defines (below) and careful use of off_t + * instead of int/ssize_t. No lseek64(), O_LARGEFILE etc necessary */ +#if ENABLE_LFS +/* CONFIG_LFS is on */ +# if ULONG_MAX > 0xffffffff +/* "long" is long enough on this system */ +typedef unsigned long uoff_t; +# define XATOOFF(a) xatoul_range(a, 0, LONG_MAX) +/* usage: sz = BB_STRTOOFF(s, NULL, 10); if (errno || sz < 0) die(); */ +# define BB_STRTOOFF bb_strtoul +# define STRTOOFF strtoul +/* usage: printf("size: %"OFF_FMT"d (%"OFF_FMT"x)\n", sz, sz); */ +# define OFF_FMT "l" +# else +/* "long" is too short, need "long long" */ +typedef unsigned long long uoff_t; +# define XATOOFF(a) xatoull_range(a, 0, LLONG_MAX) +# define BB_STRTOOFF bb_strtoull +# define STRTOOFF strtoull +# define OFF_FMT "ll" +# endif +#else +/* CONFIG_LFS is off */ +# if UINT_MAX == 0xffffffff +/* While sizeof(off_t) == sizeof(int), off_t is typedef'ed to long anyway. + * gcc will throw warnings on printf("%d", off_t). Crap... */ +typedef unsigned long uoff_t; +# define XATOOFF(a) xatoi_u(a) +# define BB_STRTOOFF bb_strtou +# define STRTOOFF strtol +# define OFF_FMT "l" +# else +typedef unsigned long uoff_t; +# define XATOOFF(a) xatoul_range(a, 0, LONG_MAX) +# define BB_STRTOOFF bb_strtoul +# define STRTOOFF strtol +# define OFF_FMT "l" +# endif #endif +/* scary. better ideas? (but do *test* them first!) */ +#define OFF_T_MAX ((off_t)~((off_t)1 << (sizeof(off_t)*8-1))) /* Some useful definitions */ +#undef FALSE #define FALSE ((int) 0) +#undef TRUE #define TRUE ((int) 1) +#undef SKIP #define SKIP ((int) 2) /* for mtab.c */ @@ -91,256 +208,1267 @@ #define MAX(a,b) (((a)>(b))?(a):(b)) #endif -extern void bb_show_usage(void) __attribute__ ((noreturn)); -extern void bb_error_msg(const char *s, ...) __attribute__ ((format (printf, 1, 2))); -extern void bb_error_msg_and_die(const char *s, ...) __attribute__ ((noreturn, format (printf, 1, 2))); -extern void bb_perror_msg(const char *s, ...) __attribute__ ((format (printf, 1, 2))); -extern void bb_perror_msg_and_die(const char *s, ...) __attribute__ ((noreturn, format (printf, 1, 2))); -extern void bb_vherror_msg(const char *s, va_list p); -extern void bb_herror_msg(const char *s, ...) __attribute__ ((format (printf, 1, 2))); -extern void bb_herror_msg_and_die(const char *s, ...) __attribute__ ((noreturn, format (printf, 1, 2))); - -extern void bb_perror_nomsg_and_die(void) __attribute__ ((noreturn)); -extern void bb_perror_nomsg(void); - -/* These two are used internally -- you shouldn't need to use them */ -extern void bb_verror_msg(const char *s, va_list p) __attribute__ ((format (printf, 1, 0))); -extern void bb_vperror_msg(const char *s, va_list p) __attribute__ ((format (printf, 1, 0))); - -extern const char *bb_mode_string(int mode); -extern int is_directory(const char *name, int followLinks, struct stat *statBuf); - -extern int remove_file(const char *path, int flags); -extern int copy_file(const char *source, const char *dest, int flags); -extern ssize_t safe_read(int fd, void *buf, size_t count); -extern ssize_t bb_full_write(int fd, const void *buf, size_t len); -extern ssize_t bb_full_read(int fd, void *buf, size_t len); -extern int recursive_action(const char *fileName, int recurse, - int followLinks, int depthFirst, - int (*fileAction) (const char *fileName, struct stat* statbuf, void* userData), - int (*dirAction) (const char *fileName, struct stat* statbuf, void* userData), - void* userData); - -extern int bb_parse_mode( const char* s, mode_t* theMode); -extern long bb_xgetlarg(const char *arg, int base, long lower, long upper); - -extern unsigned long bb_baud_to_value(speed_t speed); -extern speed_t bb_value_to_baud(unsigned long value); - -extern int get_kernel_revision(void); - -extern int get_console_fd(void); -extern struct mntent *find_mount_point(const char *name, const char *table); -extern void write_mtab(char* blockDevice, char* directory, - char* filesystemType, long flags, char* string_flags); -extern void erase_mtab(const char * name); -extern long *find_pid_by_name( const char* pidName); -extern char *find_real_root_device_name(const char* name); -extern char *bb_get_line_from_file(FILE *file); -extern char *bb_get_chomped_line_from_file(FILE *file); -extern int bb_copyfd(int fd1, int fd2, const off_t chunksize); -extern void bb_xprint_and_close_file(FILE *file); -extern int bb_xprint_file_by_name(const char *filename); -extern char bb_process_escape_sequence(const char **ptr); -extern char *bb_get_last_path_component(char *path); -extern FILE *bb_wfopen(const char *path, const char *mode); -extern FILE *bb_xfopen(const char *path, const char *mode); - -//#warning rename? -extern int bb_fclose_nonstdin(FILE *f); -extern void bb_fflush_stdout_and_exit(int retval) __attribute__ ((noreturn)); - -extern const char *bb_opt_complementaly; -extern const struct option *bb_applet_long_options; -extern unsigned long bb_getopt_ulflags(int argc, char **argv, const char *applet_opts, ...); - -//#warning rename? -extern FILE *bb_wfopen_input(const char *filename); - -extern int bb_vfprintf(FILE * __restrict stream, const char * __restrict format, - va_list arg) __attribute__ ((format (printf, 2, 0))); -extern int bb_vprintf(const char * __restrict format, va_list arg) - __attribute__ ((format (printf, 1, 0))); -extern int bb_fprintf(FILE * __restrict stream, const char * __restrict format, ...) - __attribute__ ((format (printf, 2, 3))); -extern int bb_printf(const char * __restrict format, ...) - __attribute__ ((format (printf, 1, 2))); - -//#warning rename to xferror_filename? -extern void bb_xferror(FILE *fp, const char *fn); -extern void bb_xferror_stdout(void); -extern void bb_xfflush_stdout(void); - -extern void bb_warn_ignoring_args(int n); - -extern void chomp(char *s); -extern void trim(char *s); -extern const char *bb_skip_whitespace(const char *); - -extern struct BB_applet *find_applet_by_name(const char *name); -void run_applet_by_name(const char *name, int argc, char **argv); - -//#warning is this needed anymore? -#ifndef DMALLOC -extern void *xmalloc (size_t size); -extern void *xrealloc(void *old, size_t size); -extern void *xcalloc(size_t nmemb, size_t size); -#endif -extern char *bb_xstrdup (const char *s); -extern char *bb_xstrndup (const char *s, int n); -extern char * safe_strncpy(char *dst, const char *src, size_t size); +/* buffer allocation schemes */ +#if ENABLE_FEATURE_BUFFERS_GO_ON_STACK +#define RESERVE_CONFIG_BUFFER(buffer,len) char buffer[len] +#define RESERVE_CONFIG_UBUFFER(buffer,len) unsigned char buffer[len] +#define RELEASE_CONFIG_BUFFER(buffer) ((void)0) +#else +#if ENABLE_FEATURE_BUFFERS_GO_IN_BSS +#define RESERVE_CONFIG_BUFFER(buffer,len) static char buffer[len] +#define RESERVE_CONFIG_UBUFFER(buffer,len) static unsigned char buffer[len] +#define RELEASE_CONFIG_BUFFER(buffer) ((void)0) +#else +#define RESERVE_CONFIG_BUFFER(buffer,len) char *buffer = xmalloc(len) +#define RESERVE_CONFIG_UBUFFER(buffer,len) unsigned char *buffer = xmalloc(len) +#define RELEASE_CONFIG_BUFFER(buffer) free(buffer) +#endif +#endif -struct suffix_mult { - const char *suffix; - unsigned int mult; +#if defined(__GLIBC__) +/* glibc uses __errno_location() to get a ptr to errno */ +/* We can just memorize it once - no multithreading in busybox :) */ +extern int *const bb_errno; +#undef errno +#define errno (*bb_errno) +#endif + +unsigned long long monotonic_ns(void) FAST_FUNC; +unsigned long long monotonic_us(void) FAST_FUNC; +unsigned monotonic_sec(void) FAST_FUNC; + +extern void chomp(char *s) FAST_FUNC; +extern void trim(char *s) FAST_FUNC; +extern char *skip_whitespace(const char *) FAST_FUNC; +extern char *skip_non_whitespace(const char *) FAST_FUNC; +extern char *strrstr(const char *haystack, const char *needle) FAST_FUNC; + +//TODO: supply a pointer to char[11] buffer (avoid statics)? +extern const char *bb_mode_string(mode_t mode) FAST_FUNC; +extern int is_directory(const char *name, int followLinks, struct stat *statBuf) FAST_FUNC; +enum { /* DO NOT CHANGE THESE VALUES! cp.c, mv.c, install.c depend on them. */ + FILEUTILS_PRESERVE_STATUS = 1, + FILEUTILS_DEREFERENCE = 2, + FILEUTILS_RECUR = 4, + FILEUTILS_FORCE = 8, + FILEUTILS_INTERACTIVE = 0x10, + FILEUTILS_MAKE_HARDLINK = 0x20, + FILEUTILS_MAKE_SOFTLINK = 0x40, + FILEUTILS_DEREF_SOFTLINK = 0x80, +#if ENABLE_SELINUX + FILEUTILS_PRESERVE_SECURITY_CONTEXT = 0x100, + FILEUTILS_SET_SECURITY_CONTEXT = 0x200 +#endif }; +#define FILEUTILS_CP_OPTSTR "pdRfilsL" USE_SELINUX("c") +extern int remove_file(const char *path, int flags) FAST_FUNC; +/* NB: without FILEUTILS_RECUR in flags, it will basically "cat" + * the source, not copy (unless "source" is a directory). + * This makes "cp /dev/null file" and "install /dev/null file" (!!!) + * work coreutils-compatibly. */ +extern int copy_file(const char *source, const char *dest, int flags) FAST_FUNC; + +enum { + ACTION_RECURSE = (1 << 0), + ACTION_FOLLOWLINKS = (1 << 1), + ACTION_FOLLOWLINKS_L0 = (1 << 2), + ACTION_DEPTHFIRST = (1 << 3), + /*ACTION_REVERSE = (1 << 4), - unused */ + ACTION_QUIET = (1 << 5), +}; +extern int recursive_action(const char *fileName, unsigned flags, + int FAST_FUNC (*fileAction)(const char *fileName, struct stat* statbuf, void* userData, int depth), + int FAST_FUNC (*dirAction)(const char *fileName, struct stat* statbuf, void* userData, int depth), + void* userData, unsigned depth) FAST_FUNC; +extern int device_open(const char *device, int mode) FAST_FUNC; +enum { GETPTY_BUFSIZE = 16 }; /* more than enough for "/dev/ttyXXX" */ +extern int xgetpty(char *line) FAST_FUNC; +extern int get_console_fd_or_die(void) FAST_FUNC; +extern void console_make_active(int fd, const int vt_num) FAST_FUNC; +extern char *find_block_device(const char *path) FAST_FUNC; +/* bb_copyfd_XX print read/write errors and return -1 if they occur */ +extern off_t bb_copyfd_eof(int fd1, int fd2) FAST_FUNC; +extern off_t bb_copyfd_size(int fd1, int fd2, off_t size) FAST_FUNC; +extern void bb_copyfd_exact_size(int fd1, int fd2, off_t size) FAST_FUNC; +/* "short" copy can be detected by return value < size */ +/* this helper yells "short read!" if param is not -1 */ +extern void complain_copyfd_and_die(off_t sz) NORETURN FAST_FUNC; +extern char bb_process_escape_sequence(const char **ptr) FAST_FUNC; +/* xxxx_strip version can modify its parameter: + * "/" -> "/" + * "abc" -> "abc" + * "abc/def" -> "def" + * "abc/def/" -> "def" !! + */ +extern char *bb_get_last_path_component_strip(char *path) FAST_FUNC; +/* "abc/def/" -> "" and it never modifies 'path' */ +extern char *bb_get_last_path_component_nostrip(const char *path) FAST_FUNC; + +int ndelay_on(int fd) FAST_FUNC; +int ndelay_off(int fd) FAST_FUNC; +int close_on_exec_on(int fd) FAST_FUNC; +void xdup2(int, int) FAST_FUNC; +void xmove_fd(int, int) FAST_FUNC; + -extern unsigned long bb_xgetularg_bnd_sfx(const char *arg, int base, - unsigned long lower, - unsigned long upper, - const struct suffix_mult *suffixes); -extern unsigned long bb_xgetularg_bnd(const char *arg, int base, - unsigned long lower, - unsigned long upper); -extern unsigned long bb_xgetularg10_bnd(const char *arg, - unsigned long lower, - unsigned long upper); -extern unsigned long bb_xgetularg10(const char *arg); +DIR *xopendir(const char *path) FAST_FUNC; +DIR *warn_opendir(const char *path) FAST_FUNC; -extern long bb_xgetlarg_bnd_sfx(const char *arg, int base, - long lower, - long upper, - const struct suffix_mult *suffixes); -extern long bb_xgetlarg10_sfx(const char *arg, const struct suffix_mult *suffixes); +/* UNUSED: char *xmalloc_realpath(const char *path) FAST_FUNC; */ +char *xmalloc_readlink(const char *path) FAST_FUNC; +char *xmalloc_readlink_or_warn(const char *path) FAST_FUNC; +char *xrealloc_getcwd_or_warn(char *cwd) FAST_FUNC; +char *xmalloc_follow_symlinks(const char *path) FAST_FUNC; -//#warning pitchable now? -extern unsigned long bb_xparse_number(const char *numstr, - const struct suffix_mult *suffixes); +enum { + /* bb_signals(BB_FATAL_SIGS, handler) catches all signals which + * otherwise would kill us, except for those resulting from bugs: + * SIGSEGV, SIGILL, SIGFPE. + * Other fatal signals not included (TODO?): + * SIGBUS Bus error (bad memory access) + * SIGPOLL Pollable event. Synonym of SIGIO + * SIGPROF Profiling timer expired + * SIGSYS Bad argument to routine + * SIGTRAP Trace/breakpoint trap + * + * The only known arch with some of these sigs not fitting + * into 32 bits is parisc (SIGXCPU=33, SIGXFSZ=34, SIGSTKFLT=36). + * Dance around with long long to guard against that... + */ + BB_FATAL_SIGS = (int)(0 + + (1LL << SIGHUP) + + (1LL << SIGINT) + + (1LL << SIGTERM) + + (1LL << SIGPIPE) // Write to pipe with no readers + + (1LL << SIGQUIT) // Quit from keyboard + + (1LL << SIGABRT) // Abort signal from abort(3) + + (1LL << SIGALRM) // Timer signal from alarm(2) + + (1LL << SIGVTALRM) // Virtual alarm clock + + (1LL << SIGXCPU) // CPU time limit exceeded + + (1LL << SIGXFSZ) // File size limit exceeded + + (1LL << SIGUSR1) // Yes kids, these are also fatal! + + (1LL << SIGUSR2) + + 0), +}; +void bb_signals(int sigs, void (*f)(int)) FAST_FUNC; +/* Unlike signal() and bb_signals, sets handler with sigaction() + * and in a way that while signal handler is run, no other signals + * will be blocked; syscalls will not be restarted: */ +void bb_signals_recursive_norestart(int sigs, void (*f)(int)) FAST_FUNC; +/* syscalls like read() will be interrupted with EINTR: */ +void signal_no_SA_RESTART_empty_mask(int sig, void (*handler)(int)) FAST_FUNC; +/* syscalls like read() won't be interrupted (though select/poll will be): */ +void signal_SA_RESTART_empty_mask(int sig, void (*handler)(int)) FAST_FUNC; +void wait_for_any_sig(void) FAST_FUNC; +void kill_myself_with_sig(int sig) NORETURN FAST_FUNC; +void sig_block(int sig) FAST_FUNC; +void sig_unblock(int sig) FAST_FUNC; +/* Will do sigaction(signum, act, NULL): */ +int sigaction_set(int sig, const struct sigaction *act) FAST_FUNC; +/* SIG_BLOCK/SIG_UNBLOCK all signals: */ +int sigprocmask_allsigs(int how) FAST_FUNC; +/* Standard handler which just records signo */ +extern smallint bb_got_signal; +void record_signo(int signo); /* not FAST_FUNC! */ + + +void xsetgid(gid_t gid) FAST_FUNC; +void xsetuid(uid_t uid) FAST_FUNC; +void xchdir(const char *path) FAST_FUNC; +void xchroot(const char *path) FAST_FUNC; +void xsetenv(const char *key, const char *value) FAST_FUNC; +void bb_unsetenv(const char *key) FAST_FUNC; +void xunlink(const char *pathname) FAST_FUNC; +void xstat(const char *pathname, struct stat *buf) FAST_FUNC; +int xopen(const char *pathname, int flags) FAST_FUNC FAST_FUNC; +int xopen3(const char *pathname, int flags, int mode) FAST_FUNC; +int open_or_warn(const char *pathname, int flags) FAST_FUNC; +int open3_or_warn(const char *pathname, int flags, int mode) FAST_FUNC; +int open_or_warn_stdin(const char *pathname) FAST_FUNC; +void xrename(const char *oldpath, const char *newpath) FAST_FUNC; +int rename_or_warn(const char *oldpath, const char *newpath) FAST_FUNC; +off_t xlseek(int fd, off_t offset, int whence) FAST_FUNC; +off_t fdlength(int fd) FAST_FUNC; + +void xpipe(int filedes[2]) FAST_FUNC; +/* In this form code with pipes is much more readable */ +struct fd_pair { int rd; int wr; }; +#define piped_pair(pair) pipe(&((pair).rd)) +#define xpiped_pair(pair) xpipe(&((pair).rd)) + +/* Useful for having small structure members/global variables */ +typedef int8_t socktype_t; +typedef int8_t family_t; +struct BUG_too_small { + char BUG_socktype_t_too_small[(0 + | SOCK_STREAM + | SOCK_DGRAM + | SOCK_RDM + | SOCK_SEQPACKET + | SOCK_RAW + ) <= 127 ? 1 : -1]; + char BUG_family_t_too_small[(0 + | AF_UNSPEC + | AF_INET + | AF_INET6 + | AF_UNIX +#ifdef AF_PACKET + | AF_PACKET +#endif +#ifdef AF_NETLINK + | AF_NETLINK +#endif + /* | AF_DECnet */ + /* | AF_IPX */ + ) <= 127 ? 1 : -1]; +}; + + +int xsocket(int domain, int type, int protocol) FAST_FUNC; +void xbind(int sockfd, struct sockaddr *my_addr, socklen_t addrlen) FAST_FUNC; +void xlisten(int s, int backlog) FAST_FUNC; +void xconnect(int s, const struct sockaddr *s_addr, socklen_t addrlen) FAST_FUNC; +ssize_t xsendto(int s, const void *buf, size_t len, const struct sockaddr *to, + socklen_t tolen) FAST_FUNC; +/* SO_REUSEADDR allows a server to rebind to an address that is already + * "in use" by old connections to e.g. previous server instance which is + * killed or crashed. Without it bind will fail until all such connections + * time out. Linux does not allow multiple live binds on same ip:port + * regardless of SO_REUSEADDR (unlike some other flavors of Unix). + * Turn it on before you call bind(). */ +void setsockopt_reuseaddr(int fd) FAST_FUNC; /* On Linux this never fails. */ +int setsockopt_broadcast(int fd) FAST_FUNC; +int setsockopt_bindtodevice(int fd, const char *iface) FAST_FUNC; +/* NB: returns port in host byte order */ +unsigned bb_lookup_port(const char *port, const char *protocol, unsigned default_port) FAST_FUNC; +typedef struct len_and_sockaddr { + socklen_t len; + union { + struct sockaddr sa; + struct sockaddr_in sin; +#if ENABLE_FEATURE_IPV6 + struct sockaddr_in6 sin6; +#endif + } u; +} len_and_sockaddr; +enum { + LSA_LEN_SIZE = offsetof(len_and_sockaddr, u), + LSA_SIZEOF_SA = sizeof( + union { + struct sockaddr sa; + struct sockaddr_in sin; +#if ENABLE_FEATURE_IPV6 + struct sockaddr_in6 sin6; +#endif + } + ) +}; +/* Create stream socket, and allocate suitable lsa. + * (lsa of correct size and lsa->sa.sa_family (AF_INET/AF_INET6)) + * af == AF_UNSPEC will result in trying to create IPv6 socket, + * and if kernel doesn't support it, IPv4. + */ +#if ENABLE_FEATURE_IPV6 +int xsocket_type(len_and_sockaddr **lsap, int af, int sock_type) FAST_FUNC; +#else +int xsocket_type(len_and_sockaddr **lsap, int sock_type) FAST_FUNC; +#define xsocket_type(lsap, af, sock_type) xsocket_type((lsap), (sock_type)) +#endif +int xsocket_stream(len_and_sockaddr **lsap) FAST_FUNC; +/* Create server socket bound to bindaddr:port. bindaddr can be NULL, + * numeric IP ("N.N.N.N") or numeric IPv6 address, + * and can have ":PORT" suffix (for IPv6 use "[X:X:...:X]:PORT"). + * Only if there is no suffix, port argument is used */ +/* NB: these set SO_REUSEADDR before bind */ +int create_and_bind_stream_or_die(const char *bindaddr, int port) FAST_FUNC; +int create_and_bind_dgram_or_die(const char *bindaddr, int port) FAST_FUNC; +/* Create client TCP socket connected to peer:port. Peer cannot be NULL. + * Peer can be numeric IP ("N.N.N.N"), numeric IPv6 address or hostname, + * and can have ":PORT" suffix (for IPv6 use "[X:X:...:X]:PORT"). + * If there is no suffix, port argument is used */ +int create_and_connect_stream_or_die(const char *peer, int port) FAST_FUNC; +/* Connect to peer identified by lsa */ +int xconnect_stream(const len_and_sockaddr *lsa) FAST_FUNC; +/* Get local address of bound or accepted socket */ +len_and_sockaddr *get_sock_lsa(int fd) FAST_FUNC; +/* Return malloc'ed len_and_sockaddr with socket address of host:port + * Currently will return IPv4 or IPv6 sockaddrs only + * (depending on host), but in theory nothing prevents e.g. + * UNIX socket address being returned, IPX sockaddr etc... + * On error does bb_error_msg and returns NULL */ +len_and_sockaddr* host2sockaddr(const char *host, int port) FAST_FUNC; +/* Version which dies on error */ +len_and_sockaddr* xhost2sockaddr(const char *host, int port) FAST_FUNC; +len_and_sockaddr* xdotted2sockaddr(const char *host, int port) FAST_FUNC; +/* Same, useful if you want to force family (e.g. IPv6) */ +#if !ENABLE_FEATURE_IPV6 +#define host_and_af2sockaddr(host, port, af) host2sockaddr((host), (port)) +#define xhost_and_af2sockaddr(host, port, af) xhost2sockaddr((host), (port)) +#else +len_and_sockaddr* host_and_af2sockaddr(const char *host, int port, sa_family_t af) FAST_FUNC; +len_and_sockaddr* xhost_and_af2sockaddr(const char *host, int port, sa_family_t af) FAST_FUNC; +#endif +/* Assign sin[6]_port member if the socket is an AF_INET[6] one, + * otherwise no-op. Useful for ftp. + * NB: does NOT do htons() internally, just direct assignment. */ +void set_nport(len_and_sockaddr *lsa, unsigned port) FAST_FUNC; +/* Retrieve sin[6]_port or return -1 for non-INET[6] lsa's */ +int get_nport(const struct sockaddr *sa) FAST_FUNC; +/* Reverse DNS. Returns NULL on failure. */ +char* xmalloc_sockaddr2host(const struct sockaddr *sa) FAST_FUNC; +/* This one doesn't append :PORTNUM */ +char* xmalloc_sockaddr2host_noport(const struct sockaddr *sa) FAST_FUNC; +/* This one also doesn't fall back to dotted IP (returns NULL) */ +char* xmalloc_sockaddr2hostonly_noport(const struct sockaddr *sa) FAST_FUNC; +/* inet_[ap]ton on steroids */ +char* xmalloc_sockaddr2dotted(const struct sockaddr *sa) FAST_FUNC; +char* xmalloc_sockaddr2dotted_noport(const struct sockaddr *sa) FAST_FUNC; +// "old" (ipv4 only) API +// users: traceroute.c hostname.c - use _list_ of all IPs +struct hostent *xgethostbyname(const char *name) FAST_FUNC; +// Also mount.c and inetd.c are using gethostbyname(), +// + inet_common.c has additional IPv4-only stuff + + +void socket_want_pktinfo(int fd) FAST_FUNC; +ssize_t send_to_from(int fd, void *buf, size_t len, int flags, + const struct sockaddr *to, + const struct sockaddr *from, + socklen_t tolen) FAST_FUNC; +ssize_t recv_from_to(int fd, void *buf, size_t len, int flags, + struct sockaddr *from, + struct sockaddr *to, + socklen_t sa_size) FAST_FUNC; + +char *xstrdup(const char *s) FAST_FUNC; +char *xstrndup(const char *s, int n) FAST_FUNC; +void overlapping_strcpy(char *dst, const char *src) FAST_FUNC; +char *safe_strncpy(char *dst, const char *src, size_t size) FAST_FUNC; +char *strncpy_IFNAMSIZ(char *dst, const char *src) FAST_FUNC; +/* Guaranteed to NOT be a macro (smallest code). Saves nearly 2k on uclibc. + * But potentially slow, don't use in one-billion-times loops */ +int bb_putchar(int ch) FAST_FUNC; +char *xasprintf(const char *format, ...) __attribute__ ((format (printf, 1, 2))) FAST_FUNC; +/* Prints unprintable chars ch as ^C or M-c to file + * (M-c is used only if ch is ORed with PRINTABLE_META), + * else it is printed as-is (except for ch = 0x9b) */ +enum { PRINTABLE_META = 0x100 }; +void fputc_printable(int ch, FILE *file) FAST_FUNC; +// gcc-4.1.1 still isn't good enough at optimizing it +// (+200 bytes compared to macro) +//static ALWAYS_INLINE +//int LONE_DASH(const char *s) { return s[0] == '-' && !s[1]; } +//static ALWAYS_INLINE +//int NOT_LONE_DASH(const char *s) { return s[0] != '-' || s[1]; } +#define LONE_DASH(s) ((s)[0] == '-' && !(s)[1]) +#define NOT_LONE_DASH(s) ((s)[0] != '-' || (s)[1]) +#define LONE_CHAR(s,c) ((s)[0] == (c) && !(s)[1]) +#define NOT_LONE_CHAR(s,c) ((s)[0] != (c) || (s)[1]) +#define DOT_OR_DOTDOT(s) ((s)[0] == '.' && (!(s)[1] || ((s)[1] == '.' && !(s)[2]))) + +/* dmalloc will redefine these to it's own implementation. It is safe + * to have the prototypes here unconditionally. */ +void *malloc_or_warn(size_t size) FAST_FUNC; +void *xmalloc(size_t size) FAST_FUNC; +void *xzalloc(size_t size) FAST_FUNC; +void *xrealloc(void *old, size_t size) FAST_FUNC; +/* After xrealloc_vector(v, 4, idx) it's ok to use + * at least v[idx] and v[idx+1], for all idx values. + * shift specifies how many new elements are added (1: 2, 2: 4... 8: 256...) + * when all elements are used up. New elements are zeroed out. */ +#define xrealloc_vector(vector, shift, idx) \ + xrealloc_vector_helper((vector), (sizeof((vector)[0]) << 8) + (shift), (idx)) +void* xrealloc_vector_helper(void *vector, unsigned sizeof_and_shift, int idx) FAST_FUNC; + + +extern ssize_t safe_read(int fd, void *buf, size_t count) FAST_FUNC; +extern ssize_t nonblock_safe_read(int fd, void *buf, size_t count) FAST_FUNC; +// NB: will return short read on error, not -1, +// if some data was read before error occurred +extern ssize_t full_read(int fd, void *buf, size_t count) FAST_FUNC; +extern void xread(int fd, void *buf, size_t count) FAST_FUNC; +extern unsigned char xread_char(int fd) FAST_FUNC; +extern ssize_t read_close(int fd, void *buf, size_t maxsz) FAST_FUNC; +extern ssize_t open_read_close(const char *filename, void *buf, size_t maxsz) FAST_FUNC; +// Reads one line a-la fgets (but doesn't save terminating '\n'). +// Reads byte-by-byte. Useful when it is important to not read ahead. +// Bytes are appended to pfx (which must be malloced, or NULL). +extern char *xmalloc_reads(int fd, char *pfx, size_t *maxsz_p) FAST_FUNC; +/* Reads block up to *maxsz_p (default: INT_MAX - 4095) */ +extern void *xmalloc_read(int fd, size_t *maxsz_p) FAST_FUNC; +/* Returns NULL if file can't be opened (default max size: INT_MAX - 4095) */ +extern void *xmalloc_open_read_close(const char *filename, size_t *maxsz_p) FAST_FUNC; +/* Autodetects .gz etc */ +extern int open_zipped(const char *fname) FAST_FUNC; +extern void *xmalloc_open_zipped_read_close(const char *fname, size_t *maxsz_p) FAST_FUNC; +/* Never returns NULL */ +extern void *xmalloc_xopen_read_close(const char *filename, size_t *maxsz_p) FAST_FUNC; + +extern ssize_t safe_write(int fd, const void *buf, size_t count) FAST_FUNC; +// NB: will return short write on error, not -1, +// if some data was written before error occurred +extern ssize_t full_write(int fd, const void *buf, size_t count) FAST_FUNC; +extern void xwrite(int fd, const void *buf, size_t count) FAST_FUNC; +extern void xwrite_str(int fd, const char *str) FAST_FUNC; +extern void xopen_xwrite_close(const char* file, const char *str) FAST_FUNC; + +/* Reads and prints to stdout till eof, then closes FILE. Exits on error: */ +extern void xprint_and_close_file(FILE *file) FAST_FUNC; + +extern char *bb_get_chunk_from_file(FILE *file, int *end) FAST_FUNC; +extern char *bb_get_chunk_with_continuation(FILE *file, int *end, int *lineno) FAST_FUNC; +/* Reads up to (and including) TERMINATING_STRING: */ +extern char *xmalloc_fgets_str(FILE *file, const char *terminating_string) FAST_FUNC; +/* Same, with limited max size, and returns the length (excluding NUL): */ +extern char *xmalloc_fgets_str_len(FILE *file, const char *terminating_string, size_t *maxsz_p) FAST_FUNC; +/* Chops off TERMINATING_STRING from the end: */ +extern char *xmalloc_fgetline_str(FILE *file, const char *terminating_string) FAST_FUNC; +/* Reads up to (and including) "\n" or NUL byte: */ +extern char *xmalloc_fgets(FILE *file) FAST_FUNC; +/* Chops off '\n' from the end, unlike fgets: */ +extern char *xmalloc_fgetline(FILE *file) FAST_FUNC; +/* Same, but doesn't try to conserve space (may have some slack after the end) */ +/* extern char *xmalloc_fgetline_fast(FILE *file) FAST_FUNC; */ + +extern void die_if_ferror(FILE *file, const char *msg) FAST_FUNC; +extern void die_if_ferror_stdout(void) FAST_FUNC; +extern void xfflush_stdout(void) FAST_FUNC; +extern void fflush_stdout_and_exit(int retval) NORETURN FAST_FUNC; +extern int fclose_if_not_stdin(FILE *file) FAST_FUNC; +extern FILE *xfopen(const char *filename, const char *mode) FAST_FUNC; +/* Prints warning to stderr and returns NULL on failure: */ +extern FILE *fopen_or_warn(const char *filename, const char *mode) FAST_FUNC; +/* "Opens" stdin if filename is special, else just opens file: */ +extern FILE *xfopen_stdin(const char *filename) FAST_FUNC; +extern FILE *fopen_or_warn_stdin(const char *filename) FAST_FUNC; +extern FILE* fopen_for_read(const char *path) FAST_FUNC; +extern FILE* xfopen_for_read(const char *path) FAST_FUNC; +extern FILE* fopen_for_write(const char *path) FAST_FUNC; +extern FILE* xfopen_for_write(const char *path) FAST_FUNC; + +int bb_pstrcmp(const void *a, const void *b) /* not FAST_FUNC! */; +void qsort_string_vector(char **sv, unsigned count) FAST_FUNC; + +/* Wrapper which restarts poll on EINTR or ENOMEM. + * On other errors complains [perror("poll")] and returns. + * Warning! May take (much) longer than timeout_ms to return! + * If this is a problem, use bare poll and open-code EINTR/ENOMEM handling */ +int safe_poll(struct pollfd *ufds, nfds_t nfds, int timeout_ms) FAST_FUNC; + +char *safe_gethostname(void) FAST_FUNC; +char *safe_getdomainname(void) FAST_FUNC; + +/* Convert each alpha char in str to lower-case */ +char* str_tolower(char *str) FAST_FUNC; + +char *utoa(unsigned n) FAST_FUNC; +char *itoa(int n) FAST_FUNC; +/* Returns a pointer past the formatted number, does NOT null-terminate */ +char *utoa_to_buf(unsigned n, char *buf, unsigned buflen) FAST_FUNC; +char *itoa_to_buf(int n, char *buf, unsigned buflen) FAST_FUNC; +/* Intelligent formatters of bignums */ +void smart_ulltoa4(unsigned long long ul, char buf[5], const char *scale) FAST_FUNC; +void smart_ulltoa5(unsigned long long ul, char buf[5], const char *scale) FAST_FUNC; +//TODO: provide pointer to buf (avoid statics)? +const char *make_human_readable_str(unsigned long long size, + unsigned long block_size, unsigned long display_unit) FAST_FUNC; +/* Put a string of hex bytes ("1b2e66fe"...), return advanced pointer */ +char *bin2hex(char *buf, const char *cp, int count) FAST_FUNC; + +/* Last element is marked by mult == 0 */ +struct suffix_mult { + char suffix[4]; + unsigned mult; +}; +#include "xatonum.h" +/* Specialized: */ +/* Using xatoi() instead of naive atoi() is not always convenient - + * in many places people want *non-negative* values, but store them + * in signed int. Therefore we need this one: + * dies if input is not in [0, INT_MAX] range. Also will reject '-0' etc */ +int xatoi_u(const char *numstr) FAST_FUNC; +/* Useful for reading port numbers */ +uint16_t xatou16(const char *numstr) FAST_FUNC; -//#warning change names? /* These parse entries in /etc/passwd and /etc/group. This is desirable * for BusyBox since we want to avoid using the glibc NSS stuff, which - * increases target size and is often not needed embedded systems. */ -extern long my_getpwnam(const char *name); -extern long my_getgrnam(const char *name); -extern char * my_getpwuid(char *name, long uid); -extern char * my_getgrgid(char *group, long gid); -extern long my_getpwnamegid(const char *name); + * increases target size and is often not needed on embedded systems. */ +long xuname2uid(const char *name) FAST_FUNC; +long xgroup2gid(const char *name) FAST_FUNC; +/* wrapper: allows string to contain numeric uid or gid */ +unsigned long get_ug_id(const char *s, long FAST_FUNC (*xname2id)(const char *)) FAST_FUNC; +/* from chpst. Does not die, returns 0 on failure */ +struct bb_uidgid_t { + uid_t uid; + gid_t gid; +}; +/* always sets uid and gid */ +int get_uidgid(struct bb_uidgid_t*, const char*, int numeric_ok) FAST_FUNC; +/* always sets uid and gid, allows numeric; exits on failure */ +void xget_uidgid(struct bb_uidgid_t*, const char*) FAST_FUNC; +/* chown-like handling of "user[:[group]" */ +void parse_chown_usergroup_or_die(struct bb_uidgid_t *u, char *user_group) FAST_FUNC; +struct passwd* xgetpwnam(const char *name) FAST_FUNC; +struct group* xgetgrnam(const char *name) FAST_FUNC; +struct passwd* xgetpwuid(uid_t uid) FAST_FUNC; +struct group* xgetgrgid(gid_t gid) FAST_FUNC; +char* xuid2uname(uid_t uid) FAST_FUNC; +char* xgid2group(gid_t gid) FAST_FUNC; +char* uid2uname(uid_t uid) FAST_FUNC; +char* gid2group(gid_t gid) FAST_FUNC; +char* uid2uname_utoa(long uid) FAST_FUNC; +char* gid2group_utoa(long gid) FAST_FUNC; +/* versions which cache results (useful for ps, ls etc) */ +const char* get_cached_username(uid_t uid) FAST_FUNC; +const char* get_cached_groupname(gid_t gid) FAST_FUNC; +void clear_username_cache(void) FAST_FUNC; +/* internally usernames are saved in fixed-sized char[] buffers */ +enum { USERNAME_MAX_SIZE = 16 - sizeof(int) }; +#if ENABLE_FEATURE_CHECK_NAMES +void die_if_bad_username(const char* name) FAST_FUNC; +#else +#define die_if_bad_username(name) ((void)(name)) +#endif -extern int device_open(const char *device, int mode); +int execable_file(const char *name) FAST_FUNC; +char *find_execable(const char *filename, char **PATHp) FAST_FUNC; +int exists_execable(const char *filename) FAST_FUNC; -extern int del_loop(const char *device); -extern int set_loop(const char *device, const char *file, int offset, int *loopro); -extern char *find_unused_loop_device (void); +/* BB_EXECxx always execs (it's not doing NOFORK/NOEXEC stuff), + * but it may exec busybox and call applet instead of searching PATH. + */ +#if ENABLE_FEATURE_PREFER_APPLETS +int bb_execvp(const char *file, char *const argv[]) FAST_FUNC; +#define BB_EXECVP(prog,cmd) bb_execvp(prog,cmd) +#define BB_EXECLP(prog,cmd,...) \ + execlp((find_applet_by_name(prog) >= 0) ? CONFIG_BUSYBOX_EXEC_PATH : prog, \ + cmd, __VA_ARGS__) +#else +#define BB_EXECVP(prog,cmd) execvp(prog,cmd) +#define BB_EXECLP(prog,cmd,...) execlp(prog,cmd, __VA_ARGS__) +#endif +/* NOMMU friendy fork+exec */ +pid_t spawn(char **argv) FAST_FUNC; +pid_t xspawn(char **argv) FAST_FUNC; + +pid_t safe_waitpid(pid_t pid, int *wstat, int options) FAST_FUNC; +/* Unlike waitpid, waits ONLY for one process. + * It's safe to pass negative 'pids' from failed [v]fork - + * wait4pid will return -1 (and will not clobber [v]fork's errno). + * IOW: rc = wait4pid(spawn(argv)); + * if (rc < 0) bb_perror_msg("%s", argv[0]); + * if (rc > 0) bb_error_msg("exit code: %d", rc); + */ +int wait4pid(pid_t pid) FAST_FUNC; +pid_t wait_any_nohang(int *wstat) FAST_FUNC; +#define wait_crashed(w) ((w) & 127) +#define wait_exitcode(w) ((w) >> 8) +#define wait_stopsig(w) ((w) >> 8) +#define wait_stopped(w) (((w) & 127) == 127) +/* wait4pid(spawn(argv)) + NOFORK/NOEXEC (if configured) */ +pid_t spawn_and_wait(char **argv) FAST_FUNC; +struct nofork_save_area { + jmp_buf die_jmp; + const char *applet_name; + int xfunc_error_retval; + uint32_t option_mask32; + int die_sleep; + smallint saved; +}; +void save_nofork_data(struct nofork_save_area *save) FAST_FUNC; +void restore_nofork_data(struct nofork_save_area *save) FAST_FUNC; +/* Does NOT check that applet is NOFORK, just blindly runs it */ +int run_nofork_applet(int applet_no, char **argv) FAST_FUNC; +int run_nofork_applet_prime(struct nofork_save_area *old, int applet_no, char **argv) FAST_FUNC; -#if (__GLIBC__ < 2) -extern int vdprintf(int d, const char *format, va_list ap); +/* Helpers for daemonization. + * + * bb_daemonize(flags) = daemonize, does not compile on NOMMU + * + * bb_daemonize_or_rexec(flags, argv) = daemonizes on MMU (and ignores argv), + * rexec's itself on NOMMU with argv passed as command line. + * Thus bb_daemonize_or_rexec may cause your <applet>_main() to be re-executed + * from the start. (It will detect it and not reexec again second time). + * You have to audit carefully that you don't do something twice as a result + * (opening files/sockets, parsing config files etc...)! + * + * Both of the above will redirect fd 0,1,2 to /dev/null and drop ctty + * (will do setsid()). + * + * fork_or_rexec(argv) = bare-bones "fork" on MMU, + * "vfork + re-exec ourself" on NOMMU. No fd redirection, no setsid(). + * On MMU ignores argv. + * + * Helper for network daemons in foreground mode: + * + * bb_sanitize_stdio() = make sure that fd 0,1,2 are opened by opening them + * to /dev/null if they are not. + */ +enum { + DAEMON_CHDIR_ROOT = 1, + DAEMON_DEVNULL_STDIO = 2, + DAEMON_CLOSE_EXTRA_FDS = 4, + DAEMON_ONLY_SANITIZE = 8, /* internal use */ +}; +#if BB_MMU + pid_t fork_or_rexec(void) FAST_FUNC; + enum { re_execed = 0 }; +# define fork_or_rexec(argv) fork_or_rexec() +# define bb_daemonize_or_rexec(flags, argv) bb_daemonize_or_rexec(flags) +# define bb_daemonize(flags) bb_daemonize_or_rexec(flags, bogus) +#else + void re_exec(char **argv) NORETURN FAST_FUNC; + pid_t fork_or_rexec(char **argv) FAST_FUNC; + extern bool re_execed; + int BUG_fork_is_unavailable_on_nommu(void) FAST_FUNC; + int BUG_daemon_is_unavailable_on_nommu(void) FAST_FUNC; + void BUG_bb_daemonize_is_unavailable_on_nommu(void) FAST_FUNC; +# define fork() BUG_fork_is_unavailable_on_nommu() +# define daemon(a,b) BUG_daemon_is_unavailable_on_nommu() +# define bb_daemonize(a) BUG_bb_daemonize_is_unavailable_on_nommu() +#endif +void bb_daemonize_or_rexec(int flags, char **argv) FAST_FUNC; +void bb_sanitize_stdio(void) FAST_FUNC; +/* Clear dangerous stuff, set PATH. Return 1 if was run by different user. */ +int sanitize_env_if_suid(void) FAST_FUNC; + + +extern const char *const bb_argv_dash[]; /* "-", NULL */ +extern const char *opt_complementary; +#if ENABLE_GETOPT_LONG +#define No_argument "\0" +#define Required_argument "\001" +#define Optional_argument "\002" +extern const char *applet_long_options; #endif +extern uint32_t option_mask32; +extern uint32_t getopt32(char **argv, const char *applet_opts, ...) FAST_FUNC; -int nfsmount(const char *spec, const char *node, int *flags, - char **extra_opts, char **mount_opts, int running_bg); -void syslog_msg_with_name(const char *name, int facility, int pri, const char *msg); -void syslog_msg(int facility, int pri, const char *msg); +typedef struct llist_t { + char *data; + struct llist_t *link; +} llist_t; +void llist_add_to(llist_t **old_head, void *data) FAST_FUNC; +void llist_add_to_end(llist_t **list_head, void *data) FAST_FUNC; +void *llist_pop(llist_t **elm) FAST_FUNC; +void llist_unlink(llist_t **head, llist_t *elm) FAST_FUNC; +void llist_free(llist_t *elm, void (*freeit)(void *data)) FAST_FUNC; +llist_t *llist_rev(llist_t *list) FAST_FUNC; +llist_t *llist_find_str(llist_t *first, const char *str) FAST_FUNC; +/* BTW, surprisingly, changing API to + * llist_t *llist_add_to(llist_t *old_head, void *data) + * etc does not result in smaller code... */ + +/* start_stop_daemon and udhcpc are special - they want + * to create pidfiles regardless of FEATURE_PIDFILE */ +#if ENABLE_FEATURE_PIDFILE || defined(WANT_PIDFILE) +/* True only if we created pidfile which is *file*, not /dev/null etc */ +extern smallint wrote_pidfile; +void write_pidfile(const char *path) FAST_FUNC; +#define remove_pidfile(path) do { if (wrote_pidfile) unlink(path); } while (0) +#else +enum { wrote_pidfile = 0 }; +#define write_pidfile(path) ((void)0) +#define remove_pidfile(path) ((void)0) +#endif -/* Include our own copy of struct sysinfo to avoid binary compatability - * problems with Linux 2.4, which changed things. Grumble, grumble. */ -struct sysinfo { - long uptime; /* Seconds since boot */ - unsigned long loads[3]; /* 1, 5, and 15 minute load averages */ - unsigned long totalram; /* Total usable main memory size */ - unsigned long freeram; /* Available memory size */ - unsigned long sharedram; /* Amount of shared memory */ - unsigned long bufferram; /* Memory used by buffers */ - unsigned long totalswap; /* Total swap space size */ - unsigned long freeswap; /* swap space still available */ - unsigned short procs; /* Number of current processes */ - unsigned short pad; /* Padding needed for m68k */ - unsigned long totalhigh; /* Total high memory size */ - unsigned long freehigh; /* Available high memory size */ - unsigned int mem_unit; /* Memory unit size in bytes */ - char _f[20-2*sizeof(long)-sizeof(int)]; /* Padding: libc5 uses this.. */ +enum { + LOGMODE_NONE = 0, + LOGMODE_STDIO = (1 << 0), + LOGMODE_SYSLOG = (1 << 1) * ENABLE_FEATURE_SYSLOG, + LOGMODE_BOTH = LOGMODE_SYSLOG + LOGMODE_STDIO, }; -extern int sysinfo (struct sysinfo* info); +extern const char *msg_eol; +extern smallint logmode; +extern int die_sleep; +extern int xfunc_error_retval; +extern jmp_buf die_jmp; +extern void xfunc_die(void) NORETURN FAST_FUNC; +extern void bb_show_usage(void) NORETURN FAST_FUNC; +extern void bb_error_msg(const char *s, ...) __attribute__ ((format (printf, 1, 2))) FAST_FUNC; +extern void bb_error_msg_and_die(const char *s, ...) __attribute__ ((noreturn, format (printf, 1, 2))) FAST_FUNC; +extern void bb_perror_msg(const char *s, ...) __attribute__ ((format (printf, 1, 2))) FAST_FUNC; +extern void bb_simple_perror_msg(const char *s) FAST_FUNC; +extern void bb_perror_msg_and_die(const char *s, ...) __attribute__ ((noreturn, format (printf, 1, 2))) FAST_FUNC; +extern void bb_simple_perror_msg_and_die(const char *s) NORETURN FAST_FUNC; +extern void bb_herror_msg(const char *s, ...) __attribute__ ((format (printf, 1, 2))) FAST_FUNC; +extern void bb_herror_msg_and_die(const char *s, ...) __attribute__ ((noreturn, format (printf, 1, 2))) FAST_FUNC; +extern void bb_perror_nomsg_and_die(void) NORETURN FAST_FUNC; +extern void bb_perror_nomsg(void) FAST_FUNC; +extern void bb_info_msg(const char *s, ...) __attribute__ ((format (printf, 1, 2))) FAST_FUNC; +extern void bb_verror_msg(const char *s, va_list p, const char *strerr) FAST_FUNC; + +/* We need to export XXX_main from libbusybox + * only if we build "individual" binaries + */ +#if ENABLE_FEATURE_INDIVIDUAL +#define MAIN_EXTERNALLY_VISIBLE EXTERNALLY_VISIBLE +#else +#define MAIN_EXTERNALLY_VISIBLE +#endif + + +/* Applets which are useful from another applets */ +int bb_cat(char** argv); +/* If shell needs them, they exist even if not enabled as applets */ +int echo_main(int argc, char** argv) USE_ECHO(MAIN_EXTERNALLY_VISIBLE); +int printf_main(int argc, char **argv) USE_PRINTF(MAIN_EXTERNALLY_VISIBLE); +int test_main(int argc, char **argv) USE_TEST(MAIN_EXTERNALLY_VISIBLE); +int kill_main(int argc, char **argv) USE_KILL(MAIN_EXTERNALLY_VISIBLE); +/* Similar, but used by chgrp, not shell */ +int chown_main(int argc, char **argv) USE_CHOWN(MAIN_EXTERNALLY_VISIBLE); +/* Used by ftpd */ +int ls_main(int argc, char **argv) USE_LS(MAIN_EXTERNALLY_VISIBLE); +/* Don't need USE_xxx() guard for these */ +int gunzip_main(int argc, char **argv) MAIN_EXTERNALLY_VISIBLE; +int bunzip2_main(int argc, char **argv) MAIN_EXTERNALLY_VISIBLE; + +#if ENABLE_ROUTE +void bb_displayroutes(int noresolve, int netstatfmt) FAST_FUNC; +#endif + +/* "Keycodes" that report an escape sequence. + * We use something which fits into signed char, + * yet doesn't represent any valid Unicode characher. + * Also, -1 is reserved for error indication and we don't use it. */ enum { - KILOBYTE = 1024, - MEGABYTE = (KILOBYTE*1024), - GIGABYTE = (MEGABYTE*1024) + KEYCODE_UP = -2, + KEYCODE_DOWN = -3, + KEYCODE_RIGHT = -4, + KEYCODE_LEFT = -5, + KEYCODE_HOME = -6, + KEYCODE_END = -7, + KEYCODE_INSERT = -8, + KEYCODE_DELETE = -9, + KEYCODE_PAGEUP = -10, + KEYCODE_PAGEDOWN = -11, +#if 0 + KEYCODE_FUN1 = -12, + KEYCODE_FUN2 = -13, + KEYCODE_FUN3 = -14, + KEYCODE_FUN4 = -15, + KEYCODE_FUN5 = -16, + KEYCODE_FUN6 = -17, + KEYCODE_FUN7 = -18, + KEYCODE_FUN8 = -19, + KEYCODE_FUN9 = -20, + KEYCODE_FUN10 = -21, + KEYCODE_FUN11 = -22, + KEYCODE_FUN12 = -23, +#endif + /* How long the longest ESC sequence we know? */ + KEYCODE_BUFFER_SIZE = 4 +}; +/* Note: fd may be in blocking or non-blocking mode, both make sense. + * For one, less uses non-blocking mode. + * Only the first read syscall inside read_key may block indefinitely + * (unless fd is in non-blocking mode), + * subsequent reads will time out after a few milliseconds. + */ +int read_key(int fd, smalluint *nbuffered, char *buffer) FAST_FUNC; + + +/* Networking */ +int create_icmp_socket(void) FAST_FUNC; +int create_icmp6_socket(void) FAST_FUNC; +/* interface.c */ +/* This structure defines protocol families and their handlers. */ +struct aftype { + const char *name; + const char *title; + int af; + int alen; + char* FAST_FUNC (*print)(unsigned char *); + const char* FAST_FUNC (*sprint)(struct sockaddr *, int numeric); + int FAST_FUNC (*input)(/*int type,*/ const char *bufp, struct sockaddr *); + void FAST_FUNC (*herror)(char *text); + int FAST_FUNC (*rprint)(int options); + int FAST_FUNC (*rinput)(int typ, int ext, char **argv); + /* may modify src */ + int FAST_FUNC (*getmask)(char *src, struct sockaddr *mask, char *name); +}; +/* This structure defines hardware protocols and their handlers. */ +struct hwtype { + const char *name; + const char *title; + int type; + int alen; + char* FAST_FUNC (*print)(unsigned char *); + int FAST_FUNC (*input)(const char *, struct sockaddr *); + int FAST_FUNC (*activate)(int fd); + int suppress_null_addr; }; -const char *make_human_readable_str(unsigned long size, unsigned long block_size, unsigned long display_unit); +extern smallint interface_opt_a; +int display_interfaces(char *ifname) FAST_FUNC; +#if ENABLE_FEATURE_HWIB +int in_ib(const char *bufp, struct sockaddr *sap) FAST_FUNC; +#else +#define in_ib(a, b) 1 /* fail */ +#endif +const struct aftype *get_aftype(const char *name) FAST_FUNC; +const struct hwtype *get_hwtype(const char *name) FAST_FUNC; +const struct hwtype *get_hwntype(int type) FAST_FUNC; + + +#ifndef BUILD_INDIVIDUAL +extern int find_applet_by_name(const char *name) FAST_FUNC; +/* Returns only if applet is not found. */ +extern void run_applet_and_exit(const char *name, char **argv) FAST_FUNC; +extern void run_applet_no_and_exit(int a, char **argv) NORETURN FAST_FUNC; +#endif -int bb_ask_confirmation(void); -int klogctl(int type, char * b, int len); +#ifdef HAVE_MNTENT_H +extern int match_fstype(const struct mntent *mt, const char *fstypes) FAST_FUNC; +extern struct mntent *find_mount_point(const char *name) FAST_FUNC; +#endif +extern void erase_mtab(const char * name) FAST_FUNC; +extern unsigned int tty_baud_to_value(speed_t speed) FAST_FUNC; +extern speed_t tty_value_to_baud(unsigned int value) FAST_FUNC; +extern void bb_warn_ignoring_args(int n) FAST_FUNC; -char *xgetcwd(char *cwd); -char *xreadlink(const char *path); -char *concat_path_file(const char *path, const char *filename); -char *concat_subpath_file(const char *path, const char *filename); -char *last_char_is(const char *s, int c); +extern int get_linux_version_code(void) FAST_FUNC; -extern long arith (const char *startbuf, int *errcode); +extern char *query_loop(const char *device) FAST_FUNC; +extern int del_loop(const char *device) FAST_FUNC; +/* If *devname is not NULL, use that name, otherwise try to find free one, + * malloc and return it in *devname. + * return value: 1: read-only loopdev was setup, 0: rw, < 0: error */ +extern int set_loop(char **devname, const char *file, unsigned long long offset) FAST_FUNC; -int read_package_field(const char *package_buffer, char **field_name, char **field_value); -//#warning yuk! -char *fgets_str(FILE *file, const char *terminating_string); +/* Like bb_ask below, but asks on stdin with no timeout. */ +char *bb_ask_stdin(const char * prompt) FAST_FUNC; +//TODO: pass buf pointer or return allocated buf (avoid statics)? +char *bb_ask(const int fd, int timeout, const char * prompt) FAST_FUNC; +int bb_ask_confirmation(void) FAST_FUNC; -extern int uncompress(int fd_in, int fd_out); -extern int inflate(int in, int out); +int bb_parse_mode(const char* s, mode_t* theMode) FAST_FUNC; -extern struct hostent *xgethostbyname(const char *name); -extern struct hostent *xgethostbyname2(const char *name, int af); -extern int create_icmp_socket(void); -extern int create_icmp6_socket(void); -extern int xconnect(const char *host, const char *port); +/* + * Config file parser + */ +enum { + PARSE_COLLAPSE = 0x00010000, // treat consecutive delimiters as one + PARSE_TRIM = 0x00020000, // trim leading and trailing delimiters +// TODO: COLLAPSE and TRIM seem to always go in pair + PARSE_GREEDY = 0x00040000, // last token takes entire remainder of the line + PARSE_MIN_DIE = 0x00100000, // die if < min tokens found + // keep a copy of current line + PARSE_KEEP_COPY = 0x00200000 * ENABLE_FEATURE_CROND_D, +// PARSE_ESCAPE = 0x00400000, // process escape sequences in tokens + // NORMAL is: + // * remove leading and trailing delimiters and collapse + // multiple delimiters into one + // * warn and continue if less than mintokens delimiters found + // * grab everything into last token + PARSE_NORMAL = PARSE_COLLAPSE | PARSE_TRIM | PARSE_GREEDY, +}; +typedef struct parser_t { + FILE *fp; + char *line; + char *data; + int lineno; +} parser_t; +parser_t* config_open(const char *filename) FAST_FUNC; +parser_t* config_open2(const char *filename, FILE* FAST_FUNC (*fopen_func)(const char *path)) FAST_FUNC; +int config_read(parser_t *parser, char **tokens, unsigned flags, const char *delims) FAST_FUNC; +#define config_read(parser, tokens, max, min, str, flags) \ + config_read(parser, tokens, ((flags) | (((min) & 0xFF) << 8) | ((max) & 0xFF)), str) +void config_close(parser_t *parser) FAST_FUNC; + +/* Concatenate path and filename to new allocated buffer. + * Add "/" only as needed (no duplicate "//" are produced). + * If path is NULL, it is assumed to be "/". + * filename should not be NULL. */ +char *concat_path_file(const char *path, const char *filename) FAST_FUNC; +char *concat_subpath_file(const char *path, const char *filename) FAST_FUNC; +const char *bb_basename(const char *name) FAST_FUNC; +/* NB: can violate const-ness (similarly to strchr) */ +char *last_char_is(const char *s, int c) FAST_FUNC; + + +int bb_make_directory(char *path, long mode, int flags) FAST_FUNC; + +int get_signum(const char *name) FAST_FUNC; +const char *get_signame(int number) FAST_FUNC; +void print_signames(void) FAST_FUNC; + +char *bb_simplify_path(const char *path) FAST_FUNC; +/* Returns ptr to NUL */ +char *bb_simplify_abs_path_inplace(char *path) FAST_FUNC; + +#define FAIL_DELAY 3 +extern void bb_do_delay(int seconds) FAST_FUNC; +extern void change_identity(const struct passwd *pw) FAST_FUNC; +extern void run_shell(const char *shell, int loginshell, const char *command, const char **additional_args) NORETURN FAST_FUNC; +extern void run_shell(const char *shell, int loginshell, const char *command, const char **additional_args) FAST_FUNC; +#if ENABLE_SELINUX +extern void renew_current_security_context(void) FAST_FUNC; +extern void set_current_security_context(security_context_t sid) FAST_FUNC; +extern context_t set_security_context_component(security_context_t cur_context, + char *user, char *role, char *type, char *range) FAST_FUNC; +extern void setfscreatecon_or_die(security_context_t scontext) FAST_FUNC; +extern void selinux_preserve_fcontext(int fdesc) FAST_FUNC; +#else +#define selinux_preserve_fcontext(fdesc) ((void)0) +#endif +extern void selinux_or_die(void) FAST_FUNC; +extern int restricted_shell(const char *shell) FAST_FUNC; + +/* setup_environment: + * if clear_env = 1: cd(pw->pw_dir), clear environment, then set + * TERM=(old value) + * USER=pw->pw_name, LOGNAME=pw->pw_name + * PATH=bb_default_[root_]path + * HOME=pw->pw_dir + * SHELL=shell + * else if change_env = 1: + * if not root (if pw->pw_uid != 0): + * USER=pw->pw_name, LOGNAME=pw->pw_name + * HOME=pw->pw_dir + * SHELL=shell + * else does nothing + */ +extern void setup_environment(const char *shell, int clear_env, int change_env, const struct passwd *pw) FAST_FUNC; +extern int correct_password(const struct passwd *pw) FAST_FUNC; +/* Returns a malloced string */ +#if !ENABLE_USE_BB_CRYPT +#define pw_encrypt(clear, salt, cleanup) pw_encrypt(clear, salt) +#endif +extern char *pw_encrypt(const char *clear, const char *salt, int cleanup) FAST_FUNC; +extern int obscure(const char *old, const char *newval, const struct passwd *pwdp) FAST_FUNC; +/* rnd is additional random input. New one is returned. + * Useful if you call crypt_make_salt many times in a row: + * rnd = crypt_make_salt(buf1, 4, 0); + * rnd = crypt_make_salt(buf2, 4, rnd); + * rnd = crypt_make_salt(buf3, 4, rnd); + * (otherwise we risk having same salt generated) + */ +extern int crypt_make_salt(char *p, int cnt, int rnd) FAST_FUNC; -//#warning wrap this? -char *dirname (char *path); +/* Returns number of lines changed, or -1 on error */ +#if !(ENABLE_FEATURE_ADDUSER_TO_GROUP || ENABLE_FEATURE_DEL_USER_FROM_GROUP) +#define update_passwd(filename, username, data, member) \ + update_passwd(filename, username, data) +#endif +extern int update_passwd(const char *filename, + const char *username, + const char *data, + const char *member) FAST_FUNC; + +int index_in_str_array(const char *const string_array[], const char *key) FAST_FUNC; +int index_in_strings(const char *strings, const char *key) FAST_FUNC; +int index_in_substr_array(const char *const string_array[], const char *key) FAST_FUNC; +int index_in_substrings(const char *strings, const char *key) FAST_FUNC; +const char *nth_string(const char *strings, int n) FAST_FUNC; + +extern void print_login_issue(const char *issue_file, const char *tty) FAST_FUNC; +extern void print_login_prompt(void) FAST_FUNC; + +char *xmalloc_ttyname(int fd) FAST_FUNC; +/* NB: typically you want to pass fd 0, not 1. Think 'applet | grep something' */ +int get_terminal_width_height(int fd, unsigned *width, unsigned *height) FAST_FUNC; + +int tcsetattr_stdin_TCSANOW(const struct termios *tp) FAST_FUNC; + +/* NB: "unsigned request" is crucial! "int request" will break some arches! */ +int ioctl_or_perror(int fd, unsigned request, void *argp, const char *fmt,...) __attribute__ ((format (printf, 4, 5))) FAST_FUNC; +int ioctl_or_perror_and_die(int fd, unsigned request, void *argp, const char *fmt,...) __attribute__ ((format (printf, 4, 5))) FAST_FUNC; +#if ENABLE_IOCTL_HEX2STR_ERROR +int bb_ioctl_or_warn(int fd, unsigned request, void *argp, const char *ioctl_name) FAST_FUNC; +int bb_xioctl(int fd, unsigned request, void *argp, const char *ioctl_name) FAST_FUNC; +#define ioctl_or_warn(fd,request,argp) bb_ioctl_or_warn(fd,request,argp,#request) +#define xioctl(fd,request,argp) bb_xioctl(fd,request,argp,#request) +#else +int bb_ioctl_or_warn(int fd, unsigned request, void *argp) FAST_FUNC; +int bb_xioctl(int fd, unsigned request, void *argp) FAST_FUNC; +#define ioctl_or_warn(fd,request,argp) bb_ioctl_or_warn(fd,request,argp) +#define xioctl(fd,request,argp) bb_xioctl(fd,request,argp) +#endif -int bb_make_directory (char *path, long mode, int flags); +char *is_in_ino_dev_hashtable(const struct stat *statbuf) FAST_FUNC; +void add_to_ino_dev_hashtable(const struct stat *statbuf, const char *name) FAST_FUNC; +void reset_ino_dev_hashtable(void) FAST_FUNC; +#ifdef __GLIBC__ +/* At least glibc has horrendously large inline for this, so wrap it */ +unsigned long long bb_makedev(unsigned int major, unsigned int minor) FAST_FUNC; +#undef makedev +#define makedev(a,b) bb_makedev(a,b) +#endif -const char *u_signal_names(const char *str_sig, int *signo, int startnum); -char *bb_simplify_path(const char *path); -enum { /* DO NOT CHANGE THESE VALUES! cp.c depends on them. */ - FILEUTILS_PRESERVE_STATUS = 1, - FILEUTILS_DEREFERENCE = 2, - FILEUTILS_RECUR = 4, - FILEUTILS_FORCE = 8, - FILEUTILS_INTERACTIVE = 16 +#if ENABLE_FEATURE_EDITING +/* It's NOT just ENABLEd or disabled. It's a number: */ +#ifdef CONFIG_FEATURE_EDITING_HISTORY +# define MAX_HISTORY (CONFIG_FEATURE_EDITING_HISTORY + 0) +#else +# define MAX_HISTORY 0 +#endif +typedef struct line_input_t { + int flags; + const char *path_lookup; +#if MAX_HISTORY + int cnt_history; + int cur_history; +#if ENABLE_FEATURE_EDITING_SAVEHISTORY + unsigned cnt_history_in_file; + const char *hist_file; +#endif + char *history[MAX_HISTORY + 1]; +#endif +} line_input_t; +enum { + DO_HISTORY = 1 * (MAX_HISTORY > 0), + SAVE_HISTORY = 2 * (MAX_HISTORY > 0) * ENABLE_FEATURE_EDITING_SAVEHISTORY, + TAB_COMPLETION = 4 * ENABLE_FEATURE_TAB_COMPLETION, + USERNAME_COMPLETION = 8 * ENABLE_FEATURE_USERNAME_COMPLETION, + VI_MODE = 0x10 * ENABLE_FEATURE_EDITING_VI, + WITH_PATH_LOOKUP = 0x20, + FOR_SHELL = DO_HISTORY | SAVE_HISTORY | TAB_COMPLETION | USERNAME_COMPLETION, }; +line_input_t *new_line_input_t(int flags) FAST_FUNC; +/* so far static: void free_line_input_t(line_input_t *n) FAST_FUNC; */ +/* Returns: + * -1 on read errors or EOF, or on bare Ctrl-D, + * 0 on ctrl-C (the line entered is still returned in 'command'), + * >0 length of input string, including terminating '\n' + */ +int read_line_input(const char* prompt, char* command, int maxsize, line_input_t *state) FAST_FUNC; +#else +int read_line_input(const char* prompt, char* command, int maxsize) FAST_FUNC; +#define read_line_input(prompt, command, maxsize, state) \ + read_line_input(prompt, command, maxsize) +#endif -extern const char *bb_applet_name; - -extern const char * const bb_msg_full_version; -extern const char * const bb_msg_memory_exhausted; -extern const char * const bb_msg_invalid_date; -extern const char * const bb_msg_io_error; -extern const char * const bb_msg_write_error; -extern const char * const bb_msg_name_longer_than_foo; -extern const char * const bb_msg_unknown; -extern const char * const bb_msg_can_not_create_raw_socket; -extern const char * const bb_msg_perm_denied_are_you_root; -extern const char * const bb_msg_standard_input; -extern const char * const bb_msg_standard_output; - -extern const char * const bb_path_nologin_file; -extern const char * const bb_path_passwd_file; -extern const char * const bb_path_shadow_file; -extern const char * const bb_path_gshadow_file; -extern const char * const bb_path_group_file; -extern const char * const bb_path_securetty_file; -extern const char * const bb_path_motd_file; - -extern const char bb_path_mtab_file[]; -extern int bb_default_error_retval; +#ifndef COMM_LEN +#ifdef TASK_COMM_LEN +enum { COMM_LEN = TASK_COMM_LEN }; +#else +/* synchronize with sizeof(task_struct.comm) in /usr/include/linux/sched.h */ +enum { COMM_LEN = 16 }; +#endif +#endif +typedef struct procps_status_t { + DIR *dir; + uint8_t shift_pages_to_bytes; + uint8_t shift_pages_to_kb; +/* Fields are set to 0/NULL if failed to determine (or not requested) */ + uint16_t argv_len; + char *argv0; + USE_SELINUX(char *context;) + /* Everything below must contain no ptrs to malloc'ed data: + * it is memset(0) for each process in procps_scan() */ + unsigned long vsz, rss; /* we round it to kbytes */ + unsigned long stime, utime; + unsigned long start_time; + unsigned pid; + unsigned ppid; + unsigned pgid; + unsigned sid; + unsigned uid; + unsigned gid; + unsigned tty_major,tty_minor; +#if ENABLE_FEATURE_TOPMEM + unsigned long mapped_rw; + unsigned long mapped_ro; + unsigned long shared_clean; + unsigned long shared_dirty; + unsigned long private_clean; + unsigned long private_dirty; + unsigned long stack; +#endif + char state[4]; + /* basename of executable in exec(2), read from /proc/N/stat + * (if executable is symlink or script, it is NOT replaced + * by link target or interpreter name) */ + char comm[COMM_LEN]; + /* user/group? - use passwd/group parsing functions */ +#if ENABLE_FEATURE_TOP_SMP_PROCESS + int last_seen_on_cpu; +#endif +} procps_status_t; +enum { + PSSCAN_PID = 1 << 0, + PSSCAN_PPID = 1 << 1, + PSSCAN_PGID = 1 << 2, + PSSCAN_SID = 1 << 3, + PSSCAN_UIDGID = 1 << 4, + PSSCAN_COMM = 1 << 5, + /* PSSCAN_CMD = 1 << 6, - use read_cmdline instead */ + PSSCAN_ARGV0 = 1 << 7, + /* PSSCAN_EXE = 1 << 8, - not implemented */ + PSSCAN_STATE = 1 << 9, + PSSCAN_VSZ = 1 << 10, + PSSCAN_RSS = 1 << 11, + PSSCAN_STIME = 1 << 12, + PSSCAN_UTIME = 1 << 13, + PSSCAN_TTY = 1 << 14, + PSSCAN_SMAPS = (1 << 15) * ENABLE_FEATURE_TOPMEM, + /* NB: used by find_pid_by_name(). Any applet using it + * needs to be mentioned here. */ + PSSCAN_ARGVN = (1 << 16) * (ENABLE_KILLALL + || ENABLE_PGREP || ENABLE_PKILL + || ENABLE_PIDOF + || ENABLE_SESTATUS + ), + USE_SELINUX(PSSCAN_CONTEXT = 1 << 17,) + PSSCAN_START_TIME = 1 << 18, + PSSCAN_CPU = 1 << 19, + /* These are all retrieved from proc/NN/stat in one go: */ + PSSCAN_STAT = PSSCAN_PPID | PSSCAN_PGID | PSSCAN_SID + /**/ | PSSCAN_COMM | PSSCAN_STATE + /**/ | PSSCAN_VSZ | PSSCAN_RSS + /**/ | PSSCAN_STIME | PSSCAN_UTIME | PSSCAN_START_TIME + /**/ | PSSCAN_TTY +#if ENABLE_FEATURE_TOP_SMP_PROCESS + /**/ | PSSCAN_CPU +#endif +}; +//procps_status_t* alloc_procps_scan(void) FAST_FUNC; +void free_procps_scan(procps_status_t* sp) FAST_FUNC; +procps_status_t* procps_scan(procps_status_t* sp, int flags) FAST_FUNC; +/* Format cmdline (up to col chars) into char buf[col+1] */ +/* Puts [comm] if cmdline is empty (-> process is a kernel thread) */ +void read_cmdline(char *buf, int col, unsigned pid, const char *comm) FAST_FUNC; +pid_t *find_pid_by_name(const char* procName) FAST_FUNC; +pid_t *pidlist_reverse(pid_t *pidList) FAST_FUNC; + + +extern const char bb_uuenc_tbl_base64[]; +extern const char bb_uuenc_tbl_std[]; +void bb_uuencode(char *store, const void *s, int length, const char *tbl) FAST_FUNC; + +typedef struct sha1_ctx_t { + uint32_t hash[8]; /* 5, +3 elements for sha256 */ + uint64_t total64; + uint8_t wbuffer[64]; /* NB: always correctly aligned for uint64_t */ + void (*process_block)(struct sha1_ctx_t*) FAST_FUNC; +} sha1_ctx_t; +void sha1_begin(sha1_ctx_t *ctx) FAST_FUNC; +void sha1_hash(const void *data, size_t length, sha1_ctx_t *ctx) FAST_FUNC; +void sha1_end(void *resbuf, sha1_ctx_t *ctx) FAST_FUNC; +typedef struct sha1_ctx_t sha256_ctx_t; +void sha256_begin(sha256_ctx_t *ctx) FAST_FUNC; +#define sha256_hash sha1_hash +#define sha256_end sha1_end +typedef struct sha512_ctx_t { + uint64_t hash[8]; + uint64_t total64[2]; + uint8_t wbuffer[128]; /* NB: always correctly aligned for uint64_t */ +} sha512_ctx_t; +void sha512_begin(sha512_ctx_t *ctx) FAST_FUNC; +void sha512_hash(const void *buffer, size_t len, sha512_ctx_t *ctx) FAST_FUNC; +void sha512_end(void *resbuf, sha512_ctx_t *ctx) FAST_FUNC; +#if 1 +typedef struct md5_ctx_t { + uint32_t A; + uint32_t B; + uint32_t C; + uint32_t D; + uint64_t total; + uint32_t buflen; + char buffer[128]; +} md5_ctx_t; +#else +/* libbb/md5prime.c uses a bit different one: */ +typedef struct md5_ctx_t { + uint32_t state[4]; /* state (ABCD) */ + uint32_t count[2]; /* number of bits, modulo 2^64 (lsb first) */ + unsigned char buffer[64]; /* input buffer */ +} md5_ctx_t; +#endif +void md5_begin(md5_ctx_t *ctx) FAST_FUNC; +void md5_hash(const void *data, size_t length, md5_ctx_t *ctx) FAST_FUNC; +void md5_end(void *resbuf, md5_ctx_t *ctx) FAST_FUNC; + + +uint32_t *crc32_filltable(uint32_t *tbl256, int endian) FAST_FUNC; + +typedef struct masks_labels_t { + const char *labels; + const int masks[]; +} masks_labels_t; +int print_flags_separated(const int *masks, const char *labels, + int flags, const char *separator) FAST_FUNC; +int print_flags(const masks_labels_t *ml, int flags) FAST_FUNC; + + +extern const char *applet_name; +/* "BusyBox vN.N.N (timestamp or extra_version)" */ +extern const char bb_banner[]; +extern const char bb_msg_memory_exhausted[]; +extern const char bb_msg_invalid_date[]; +extern const char bb_msg_read_error[]; +extern const char bb_msg_write_error[]; +extern const char bb_msg_unknown[]; +extern const char bb_msg_can_not_create_raw_socket[]; +extern const char bb_msg_perm_denied_are_you_root[]; +extern const char bb_msg_requires_arg[]; +extern const char bb_msg_invalid_arg[]; +extern const char bb_msg_standard_input[]; +extern const char bb_msg_standard_output[]; + +extern const char bb_str_default[]; +/* NB: (bb_hexdigits_upcase[i] | 0x20) -> lowercase hex digit */ +extern const char bb_hexdigits_upcase[]; -#ifdef CONFIG_FEATURE_DEVFS +extern const char bb_path_mtab_file[]; +extern const char bb_path_passwd_file[]; +extern const char bb_path_shadow_file[]; +extern const char bb_path_gshadow_file[]; +extern const char bb_path_group_file[]; +extern const char bb_path_motd_file[]; +extern const char bb_path_wtmp_file[]; +extern const char bb_dev_null[]; +extern const char bb_busybox_exec_path[]; +/* util-linux manpage says /sbin:/bin:/usr/sbin:/usr/bin, + * but I want to save a few bytes here */ +extern const char bb_PATH_root_path[]; /* "PATH=/sbin:/usr/sbin:/bin:/usr/bin" */ +#define bb_default_root_path (bb_PATH_root_path + sizeof("PATH")) +#define bb_default_path (bb_PATH_root_path + sizeof("PATH=/sbin:/usr/sbin")) + +extern const int const_int_0; +extern const int const_int_1; + + +#ifndef BUFSIZ +#define BUFSIZ 4096 +#endif +/* Providing hard guarantee on minimum size (think of BUFSIZ == 128) */ +enum { COMMON_BUFSIZE = (BUFSIZ >= 256*sizeof(void*) ? BUFSIZ+1 : 256*sizeof(void*)) }; +extern char bb_common_bufsiz1[COMMON_BUFSIZE]; +/* This struct is deliberately not defined. */ +/* See docs/keep_data_small.txt */ +struct globals; +/* '*const' ptr makes gcc optimize code much better. + * Magic prevents ptr_to_globals from going into rodata. + * If you want to assign a value, use SET_PTR_TO_GLOBALS(x) */ +extern struct globals *const ptr_to_globals; +/* At least gcc 3.4.6 on mipsel system needs optimization barrier */ +#define barrier() __asm__ __volatile__("":::"memory") +#define SET_PTR_TO_GLOBALS(x) do { \ + (*(struct globals**)&ptr_to_globals) = (x); \ + barrier(); \ +} while (0) + +/* You can change LIBBB_DEFAULT_LOGIN_SHELL, but don't use it, + * use bb_default_login_shell and following defines. + * If you change LIBBB_DEFAULT_LOGIN_SHELL, + * don't forget to change increment constant. */ +#define LIBBB_DEFAULT_LOGIN_SHELL "-/bin/sh" +extern const char bb_default_login_shell[]; +/* "/bin/sh" */ +#define DEFAULT_SHELL (bb_default_login_shell+1) +/* "sh" */ +#define DEFAULT_SHELL_SHORT_NAME (bb_default_login_shell+6) + +#if ENABLE_FEATURE_DEVFS # define CURRENT_VC "/dev/vc/0" # define VC_1 "/dev/vc/1" # define VC_2 "/dev/vc/2" @@ -361,6 +1489,9 @@ extern int bb_default_error_retval; #endif # define VC_FORMAT "/dev/vc/%d" # define LOOP_FORMAT "/dev/loop/%d" +# define LOOP_NAMESIZE (sizeof("/dev/loop/") + sizeof(int)*3 + 1) +# define LOOP_NAME "/dev/loop/" +# define FB_0 "/dev/fb/0" #else # define CURRENT_VC "/dev/tty0" # define VC_1 "/dev/tty1" @@ -379,80 +1510,42 @@ extern int bb_default_error_retval; #endif # define VC_FORMAT "/dev/tty%d" # define LOOP_FORMAT "/dev/loop%d" +# define LOOP_NAMESIZE (sizeof("/dev/loop") + sizeof(int)*3 + 1) +# define LOOP_NAME "/dev/loop" +# define FB_0 "/dev/fb0" #endif -//#warning put these in .o files - /* The following devices are the same on devfs and non-devfs systems. */ #define CURRENT_TTY "/dev/tty" -#define CONSOLE_DEV "/dev/console" - -int is_in_ino_dev_hashtable(const struct stat *statbuf, char **name); -void add_to_ino_dev_hashtable(const struct stat *statbuf, const char *name); -void reset_ino_dev_hashtable(void); - -/* Stupid gcc always includes its own builtin strlen()... */ -extern size_t bb_strlen(const char *string); -#define strlen(x) bb_strlen(x) - -void bb_xasprintf(char **string_ptr, const char *format, ...) __attribute__ ((format (printf, 2, 3))); - - -#define FAIL_DELAY 3 -extern void change_identity ( const struct passwd *pw ); -extern void run_shell ( const char *shell, int loginshell, const char *command, const char **additional_args -#ifdef CONFIG_SELINUX - , security_id_t sid -#endif -); -extern int run_parts(char **args, const unsigned char test_mode, char **env); -extern int restricted_shell ( const char *shell ); -extern void setup_environment ( const char *shell, int loginshell, int changeenv, const struct passwd *pw ); -extern int correct_password ( const struct passwd *pw ); -extern char *pw_encrypt(const char *clear, const char *salt); -extern struct spwd *pwd_to_spwd(const struct passwd *pw); -extern int obscure(const char *old, const char *newval, const struct passwd *pwdp); - -extern int bb_xopen(const char *pathname, int flags); -extern ssize_t bb_xread(int fd, void *buf, size_t count); -extern void bb_xread_all(int fd, void *buf, size_t count); -extern unsigned char bb_xread_char(int fd); - -typedef struct { - int pid; - char user[9]; - char state[4]; - unsigned long rss; - int ppid; -#ifdef FEATURE_CPU_USAGE_PERCENTAGE - unsigned pcpu; - unsigned long stime, utime; -#endif - char *cmd; +#define DEV_CONSOLE "/dev/console" - /* basename of executable file in call to exec(2), - size from kernel headers */ - char short_cmd[16]; -} procps_status_t; -extern procps_status_t * procps_scan(int save_user_arg0 -#ifdef CONFIG_SELINUX - , int use_selinux, security_id_t *sid +#ifndef RB_POWER_OFF +/* Stop system and switch power off if possible. */ +#define RB_POWER_OFF 0x4321fedc #endif -); -extern unsigned short compare_string_array(const char *string_array[], const char *key); -extern int my_query_module(const char *name, int which, void **buf, size_t *bufsize, size_t *ret); +/* Make sure we call functions instead of macros. */ +#undef isalnum +#undef isalpha +#undef isascii +#undef isblank +#undef iscntrl +#undef isgraph +#undef islower +#undef isprint +#undef ispunct +#undef isspace +#undef isupper +#undef isxdigit -typedef struct llist_s { - char *data; - struct llist_s *link; -} llist_t; -extern llist_t *llist_add_to(llist_t *old_head, char *new_item); +/* This one is more efficient - we save ~400 bytes */ +#undef isdigit +#define isdigit(a) ((unsigned)((a) - '0') <= 9) -void print_login_issue(const char *issue_file, const char *tty); -void print_login_prompt(void); +#define ARRAY_SIZE(x) ((unsigned)(sizeof(x) / sizeof((x)[0]))) -void vfork_daemon_rexec(int argc, char **argv, char *foreground_opt); -#endif /* __LIBCONFIG_H__ */ +POP_SAVED_FUNCTION_VISIBILITY + +#endif |