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-rw-r--r--utility.c1887
1 files changed, 0 insertions, 1887 deletions
diff --git a/utility.c b/utility.c
deleted file mode 100644
index 8408a6c..0000000
--- a/utility.c
+++ /dev/null
@@ -1,1887 +0,0 @@
-/* vi: set sw=4 ts=4: */
-/*
- * Utility routines.
- *
- * Copyright (C) tons of folks. Tracking down who wrote what
- * isn't something I'm going to worry about... If you wrote something
- * here, please feel free to acknowledge your work.
- *
- * 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
- * Permission has been granted to redistribute this code under the GPL.
- *
- */
-
-#include <stdio.h>
-#include <string.h>
-#include <errno.h>
-#include <fcntl.h>
-#include <dirent.h>
-#include <time.h>
-#include <utime.h>
-#include <unistd.h>
-#include <ctype.h>
-#include <stdlib.h>
-#include <limits.h>
-#include <stdarg.h>
-#include <sys/ioctl.h>
-#include <sys/utsname.h> /* for uname(2) */
-
-#include "busybox.h"
-#if defined (BB_CHMOD_CHOWN_CHGRP) \
- || defined (BB_CP_MV) \
- || defined (BB_FIND) \
- || defined (BB_INSMOD) \
- || defined (BB_LS) \
- || defined (BB_RM) \
- || defined (BB_TAR)
-/* same conditions as recursive_action */
-#define bb_need_name_too_long
-#endif
-#define bb_need_memory_exhausted
-#define bb_need_full_version
-#define BB_DECLARE_EXTERN
-#include "messages.c"
-
-#include "pwd_grp/pwd.h"
-#include "pwd_grp/grp.h"
-
-/* for the _syscall() macros */
-#include <sys/syscall.h>
-#include <linux/unistd.h>
-
-/* Busybox mount uses either /proc/mounts or /dev/mtab to
- * get the list of currently mounted filesystems */
-#if defined BB_MOUNT || defined BB_UMOUNT || defined BB_DF
-# if defined BB_MTAB
-const char mtab_file[] = "/etc/mtab";
-# else
-# if defined BB_FEATURE_USE_DEVPS_PATCH
-const char mtab_file[] = "/dev/mtab";
-# else
-const char mtab_file[] = "/proc/mounts";
-# endif
-# endif
-#endif
-
-#if defined(BB_KLOGD) || defined(BB_LOGGER)
-#include <syslog.h>
-#endif
-
-static struct BB_applet *applet_using;
-
-extern void show_usage(void)
-{
- const char *format_string;
- const char *usage_string = usage_messages;
- int i;
-
- for (i = applet_using - applets; i > 0; ) {
- if (!*usage_string++) {
- --i;
- }
- }
- format_string = "%s\n\nUsage: %s %s\n\n";
- if(*usage_string == 0)
- format_string = "%s\n\nNo help available.\n\n";
- fprintf(stderr, format_string,
- full_version, applet_using->name, usage_string);
- exit(EXIT_FAILURE);
-}
-
-
-static void verror_msg(const char *s, va_list p)
-{
- fflush(stdout);
- fprintf(stderr, "%s: ", applet_name);
- vfprintf(stderr, s, p);
-}
-
-extern void error_msg(const char *s, ...)
-{
- va_list p;
-
- va_start(p, s);
- verror_msg(s, p);
- va_end(p);
- putc('\n', stderr);
-}
-
-extern void error_msg_and_die(const char *s, ...)
-{
- va_list p;
-
- va_start(p, s);
- verror_msg(s, p);
- va_end(p);
- putc('\n', stderr);
- exit(EXIT_FAILURE);
-}
-
-static void vperror_msg(const char *s, va_list p)
-{
- int err=errno;
- if(s == 0) s = "";
- verror_msg(s, p);
- if (*s) s = ": ";
- fprintf(stderr, "%s%s\n", s, strerror(err));
-}
-
-extern void perror_msg(const char *s, ...)
-{
- va_list p;
-
- va_start(p, s);
- vperror_msg(s, p);
- va_end(p);
-}
-
-extern void perror_msg_and_die(const char *s, ...)
-{
- va_list p;
-
- va_start(p, s);
- vperror_msg(s, p);
- va_end(p);
- exit(EXIT_FAILURE);
-}
-
-#if defined BB_INIT || defined BB_MKSWAP || defined BB_MOUNT || defined BB_NFSMOUNT || defined BB_FEATURE_IFCONFIG_STATUS
-/* Returns kernel version encoded as major*65536 + minor*256 + patch,
- * so, for example, to check if the kernel is greater than 2.2.11:
- * if (get_kernel_revision() <= 2*65536+2*256+11) { <stuff> }
- */
-extern int get_kernel_revision(void)
-{
- struct utsname name;
- char *s;
- int i, r;
-
- if (uname(&name) == -1) {
- perror_msg("cannot get system information");
- return (0);
- }
-
- s = name.release;
- r = 0;
- for (i=0 ; i<3 ; i++) {
- r = r * 256 + atoi(strtok(s, "."));
- s = NULL;
- }
- return r;
-}
-#endif /* BB_INIT */
-
-
-
-#if defined BB_FREE || defined BB_INIT || defined BB_UNAME || defined BB_UPTIME
-_syscall1(int, sysinfo, struct sysinfo *, info);
-#endif /* BB_INIT */
-
-#if defined BB_MOUNT || defined BB_UMOUNT
-
-/* Include our own version of <sys/mount.h>, since libc5 doesn't
- * know about umount2 */
-extern _syscall1(int, umount, const char *, special_file);
-extern _syscall5(int, mount, const char *, special_file, const char *, dir,
- const char *, fstype, unsigned long int, rwflag, const void *, data);
-#ifndef __NR_umount2
-# warning This kernel does not support the umount2 syscall
-# warning The umount2 system call is being stubbed out...
- int umount2(const char * special_file, int flags)
- {
- /* BusyBox was compiled against a kernel that did not support
- * the umount2 system call. To make this application work,
- * you will need to recompile with a kernel supporting the
- * umount2 system call.
- */
- fprintf(stderr, "\n\nTo make this application work, you will need to recompile\n");
- fprintf(stderr, "with a kernel supporting the umount2 system call. -Erik\n\n");
- errno=ENOSYS;
- return -1;
- }
-# else
- extern _syscall2(int, umount2, const char *, special_file, int, flags);
-# endif
-#endif
-
-
-
-#if defined BB_FEATURE_NEW_MODULE_INTERFACE && ( defined BB_INSMOD || defined BB_LSMOD )
-#ifndef __NR_query_module
-static const int __NR_query_module = 167;
-#endif
-_syscall5(int, query_module, const char *, name, int, which,
- void *, buf, size_t, bufsize, size_t*, ret);
-#endif
-
-
-#if defined (BB_CP_MV) || defined (BB_DU)
-
-#define HASH_SIZE 311 /* Should be prime */
-#define hash_inode(i) ((i) % HASH_SIZE)
-
-static ino_dev_hashtable_bucket_t *ino_dev_hashtable[HASH_SIZE];
-
-/*
- * Return 1 if statbuf->st_ino && statbuf->st_dev are recorded in
- * `ino_dev_hashtable', else return 0
- *
- * If NAME is a non-NULL pointer to a character pointer, and there is
- * a match, then set *NAME to the value of the name slot in that
- * bucket.
- */
-int is_in_ino_dev_hashtable(const struct stat *statbuf, char **name)
-{
- ino_dev_hashtable_bucket_t *bucket;
-
- bucket = ino_dev_hashtable[hash_inode(statbuf->st_ino)];
- while (bucket != NULL) {
- if ((bucket->ino == statbuf->st_ino) &&
- (bucket->dev == statbuf->st_dev))
- {
- if (name) *name = bucket->name;
- return 1;
- }
- bucket = bucket->next;
- }
- return 0;
-}
-
-/* Add statbuf to statbuf hash table */
-void add_to_ino_dev_hashtable(const struct stat *statbuf, const char *name)
-{
- int i;
- size_t s;
- ino_dev_hashtable_bucket_t *bucket;
-
- i = hash_inode(statbuf->st_ino);
- s = name ? strlen(name) : 0;
- bucket = xmalloc(sizeof(ino_dev_hashtable_bucket_t) + s);
- bucket->ino = statbuf->st_ino;
- bucket->dev = statbuf->st_dev;
- if (name)
- strcpy(bucket->name, name);
- else
- bucket->name[0] = '\0';
- bucket->next = ino_dev_hashtable[i];
- ino_dev_hashtable[i] = bucket;
-}
-
-/* Clear statbuf hash table */
-void reset_ino_dev_hashtable(void)
-{
- int i;
- ino_dev_hashtable_bucket_t *bucket;
-
- for (i = 0; i < HASH_SIZE; i++) {
- while (ino_dev_hashtable[i] != NULL) {
- bucket = ino_dev_hashtable[i]->next;
- free(ino_dev_hashtable[i]);
- ino_dev_hashtable[i] = bucket;
- }
- }
-}
-
-#endif /* BB_CP_MV || BB_DU */
-
-#if defined (BB_CP_MV) || defined (BB_DU) || defined (BB_LN) || defined (BB_DPKG_DEB)
-/*
- * Return TRUE if a fileName is a directory.
- * Nonexistant files return FALSE.
- */
-int is_directory(const char *fileName, const int followLinks, struct stat *statBuf)
-{
- int status;
- int didMalloc = 0;
-
- if (statBuf == NULL) {
- statBuf = (struct stat *)xmalloc(sizeof(struct stat));
- ++didMalloc;
- }
-
- if (followLinks == TRUE)
- status = stat(fileName, statBuf);
- else
- status = lstat(fileName, statBuf);
-
- if (status < 0 || !(S_ISDIR(statBuf->st_mode))) {
- status = FALSE;
- }
- else status = TRUE;
-
- if (didMalloc) {
- free(statBuf);
- statBuf = NULL;
- }
- return status;
-}
-#endif
-
-#if defined BB_AR || defined BB_CP_MV
-/*
- * Copy chunksize bytes between two file descriptors
- */
-int copy_file_chunk(int srcfd, int dstfd, size_t chunksize)
-{
- size_t size;
- char buffer[BUFSIZ]; /* BUFSIZ is declared in stdio.h */
-
- while (chunksize > 0) {
- if (chunksize > BUFSIZ)
- size = BUFSIZ;
- else
- size = chunksize;
- if (full_write(dstfd, buffer, full_read(srcfd, buffer, size)) < size)
- return(FALSE);
- chunksize -= size;
- }
- return (TRUE);
-}
-#endif
-
-
-#if defined (BB_CP_MV) || defined BB_DPKG
-/*
- * Copy one file to another, while possibly preserving its modes, times, and
- * modes. Returns TRUE if successful, or FALSE on a failure with an error
- * message output. (Failure is not indicated if attributes cannot be set.)
- * -Erik Andersen
- */
-int
-copy_file(const char *srcName, const char *destName,
- int setModes, int followLinks, int forceFlag)
-{
- int rfd;
- int wfd;
- int status;
- struct stat srcStatBuf;
- struct stat dstStatBuf;
- struct utimbuf times;
-
- if (followLinks == TRUE)
- status = stat(srcName, &srcStatBuf);
- else
- status = lstat(srcName, &srcStatBuf);
-
- if (status < 0) {
- perror_msg("%s", srcName);
- return FALSE;
- }
-
- if (followLinks == TRUE)
- status = stat(destName, &dstStatBuf);
- else
- status = lstat(destName, &dstStatBuf);
-
- if (status < 0 || forceFlag==TRUE) {
- unlink(destName);
- dstStatBuf.st_ino = -1;
- dstStatBuf.st_dev = -1;
- }
-
- if ((srcStatBuf.st_dev == dstStatBuf.st_dev) &&
- (srcStatBuf.st_ino == dstStatBuf.st_ino)) {
- error_msg("Copying file \"%s\" to itself", srcName);
- return FALSE;
- }
-
- if (S_ISDIR(srcStatBuf.st_mode)) {
- //fprintf(stderr, "copying directory %s to %s\n", srcName, destName);
- /* Make sure the directory is writable */
- status = mkdir(destName, 0777777 ^ umask(0));
- if (status < 0 && errno != EEXIST) {
- perror_msg("%s", destName);
- return FALSE;
- }
- } else if (S_ISLNK(srcStatBuf.st_mode)) {
- char link_val[BUFSIZ + 1];
- int link_size;
-
- //fprintf(stderr, "copying link %s to %s\n", srcName, destName);
- /* Warning: This could possibly truncate silently, to BUFSIZ chars */
- link_size = readlink(srcName, &link_val[0], BUFSIZ);
- if (link_size < 0) {
- perror_msg("%s", srcName);
- return FALSE;
- }
- link_val[link_size] = '\0';
- status = symlink(link_val, destName);
- if (status < 0) {
- perror_msg("%s", destName);
- return FALSE;
- }
-#if (__GLIBC__ >= 2) && (__GLIBC_MINOR__ >= 1)
- if (setModes == TRUE) {
- /* Try to set owner, but fail silently like GNU cp */
- lchown(destName, srcStatBuf.st_uid, srcStatBuf.st_gid);
- }
-#endif
- return TRUE;
- } else if (S_ISFIFO(srcStatBuf.st_mode)) {
- //fprintf(stderr, "copying fifo %s to %s\n", srcName, destName);
- if (mkfifo(destName, 0644) < 0) {
- perror_msg("%s", destName);
- return FALSE;
- }
- } else if (S_ISBLK(srcStatBuf.st_mode) || S_ISCHR(srcStatBuf.st_mode)
- || S_ISSOCK(srcStatBuf.st_mode)) {
- //fprintf(stderr, "copying soc, blk, or chr %s to %s\n", srcName, destName);
- if (mknod(destName, srcStatBuf.st_mode, srcStatBuf.st_rdev) < 0) {
- perror_msg("%s", destName);
- return FALSE;
- }
- } else if (S_ISREG(srcStatBuf.st_mode)) {
- //fprintf(stderr, "copying regular file %s to %s\n", srcName, destName);
- rfd = open(srcName, O_RDONLY);
- if (rfd < 0) {
- perror_msg("%s", srcName);
- return FALSE;
- }
-
- wfd = open(destName, O_WRONLY | O_CREAT | O_TRUNC,
- srcStatBuf.st_mode);
- if (wfd < 0) {
- perror_msg("%s", destName);
- close(rfd);
- return FALSE;
- }
-
- if (copy_file_chunk(rfd, wfd, srcStatBuf.st_size)==FALSE)
- goto error_exit;
-
- close(rfd);
- if (close(wfd) < 0) {
- return FALSE;
- }
- }
-
- if (setModes == TRUE) {
- /* This is fine, since symlinks never get here */
- if (chown(destName, srcStatBuf.st_uid, srcStatBuf.st_gid) < 0)
- perror_msg_and_die("%s", destName);
- if (chmod(destName, srcStatBuf.st_mode) < 0)
- perror_msg_and_die("%s", destName);
- times.actime = srcStatBuf.st_atime;
- times.modtime = srcStatBuf.st_mtime;
- if (utime(destName, &times) < 0)
- perror_msg_and_die("%s", destName);
- }
-
- return TRUE;
-
- error_exit:
- perror_msg("%s", destName);
- close(rfd);
- close(wfd);
-
- return FALSE;
-}
-#endif /* BB_CP_MV */
-
-
-
-#if defined BB_TAR || defined BB_LS ||defined BB_AR
-
-#define TYPEINDEX(mode) (((mode) >> 12) & 0x0f)
-#define TYPECHAR(mode) ("0pcCd?bB-?l?s???" [TYPEINDEX(mode)])
-
-/* The special bits. If set, display SMODE0/1 instead of MODE0/1 */
-static const mode_t SBIT[] = {
- 0, 0, S_ISUID,
- 0, 0, S_ISGID,
- 0, 0, S_ISVTX
-};
-
-/* The 9 mode bits to test */
-static const mode_t MBIT[] = {
- S_IRUSR, S_IWUSR, S_IXUSR,
- S_IRGRP, S_IWGRP, S_IXGRP,
- S_IROTH, S_IWOTH, S_IXOTH
-};
-
-static const char MODE1[] = "rwxrwxrwx";
-static const char MODE0[] = "---------";
-static const char SMODE1[] = "..s..s..t";
-static const char SMODE0[] = "..S..S..T";
-
-/*
- * Return the standard ls-like mode string from a file mode.
- * This is static and so is overwritten on each call.
- */
-const char *mode_string(int mode)
-{
- static char buf[12];
-
- int i;
-
- buf[0] = TYPECHAR(mode);
- for (i = 0; i < 9; i++) {
- if (mode & SBIT[i])
- buf[i + 1] = (mode & MBIT[i]) ? SMODE1[i] : SMODE0[i];
- else
- buf[i + 1] = (mode & MBIT[i]) ? MODE1[i] : MODE0[i];
- }
- return buf;
-}
-#endif /* BB_TAR || BB_LS */
-
-
-#if defined BB_TAR || defined BB_AR
-/*
- * Return the standard ls-like time string from a time_t
- * This is static and so is overwritten on each call.
- */
-const char *time_string(time_t timeVal)
-{
- time_t now;
- char *str;
- static char buf[26];
-
- time(&now);
-
- str = ctime(&timeVal);
-
- strcpy(buf, &str[4]);
- buf[12] = '\0';
-
- if ((timeVal > now) || (timeVal < now - 365 * 24 * 60 * 60L)) {
- strcpy(&buf[7], &str[20]);
- buf[11] = '\0';
- }
-
- return buf;
-}
-#endif /* BB_TAR || BB_AR */
-
-#if defined BB_DD || defined BB_NC || defined BB_TAIL || defined BB_TAR || defined BB_AR || defined BB_CP_MV
-/*
- * Write all of the supplied buffer out to a file.
- * This does multiple writes as necessary.
- * Returns the amount written, or -1 on an error.
- */
-int full_write(int fd, const char *buf, int len)
-{
- int cc;
- int total;
-
- total = 0;
-
- while (len > 0) {
- cc = write(fd, buf, len);
-
- if (cc < 0)
- return -1;
-
- buf += cc;
- total += cc;
- len -= cc;
- }
-
- return total;
-}
-#endif
-
-#if defined BB_AR || defined BB_CP_MV || defined BB_SH || defined BB_TAR
-/*
- * Read all of the supplied buffer from a file.
- * This does multiple reads as necessary.
- * Returns the amount read, or -1 on an error.
- * A short read is returned on an end of file.
- */
-int full_read(int fd, char *buf, int len)
-{
- int cc;
- int total;
-
- total = 0;
-
- while (len > 0) {
- cc = read(fd, buf, len);
-
- if (cc < 0)
- return -1;
-
- if (cc == 0)
- break;
-
- buf += cc;
- total += cc;
- len -= cc;
- }
-
- return total;
-}
-#endif /* BB_TAR || BB_TAIL || BB_AR || BB_SH */
-
-
-#if defined (BB_CHMOD_CHOWN_CHGRP) \
- || defined (BB_CP_MV) \
- || defined (BB_FIND) \
- || defined (BB_INSMOD) \
- || defined (BB_LS) \
- || defined (BB_RM) \
- || defined (BB_TAR)
-
-/*
- * Walk down all the directories under the specified
- * location, and do something (something specified
- * by the fileAction and dirAction function pointers).
- *
- * Unfortunately, while nftw(3) could replace this and reduce
- * code size a bit, nftw() wasn't supported before GNU libc 2.1,
- * and so isn't sufficiently portable to take over since glibc2.1
- * is so stinking huge.
- */
-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)
-{
- int status;
- struct stat statbuf;
- struct dirent *next;
-
- if (followLinks == TRUE)
- status = stat(fileName, &statbuf);
- else
- status = lstat(fileName, &statbuf);
-
- if (status < 0) {
-#ifdef BB_DEBUG_PRINT_SCAFFOLD
- fprintf(stderr,
- "status=%d followLinks=%d TRUE=%d\n",
- status, followLinks, TRUE);
-#endif
- perror_msg("%s", fileName);
- return FALSE;
- }
-
- if ((followLinks == FALSE) && (S_ISLNK(statbuf.st_mode))) {
- if (fileAction == NULL)
- return TRUE;
- else
- return fileAction(fileName, &statbuf, userData);
- }
-
- if (recurse == FALSE) {
- if (S_ISDIR(statbuf.st_mode)) {
- if (dirAction != NULL)
- return (dirAction(fileName, &statbuf, userData));
- else
- return TRUE;
- }
- }
-
- if (S_ISDIR(statbuf.st_mode)) {
- DIR *dir;
-
- if (dirAction != NULL && depthFirst == FALSE) {
- status = dirAction(fileName, &statbuf, userData);
- if (status == FALSE) {
- perror_msg("%s", fileName);
- return FALSE;
- } else if (status == SKIP)
- return TRUE;
- }
- dir = opendir(fileName);
- if (!dir) {
- perror_msg("%s", fileName);
- return FALSE;
- }
- status = TRUE;
- while ((next = readdir(dir)) != NULL) {
- char nextFile[PATH_MAX];
-
- if ((strcmp(next->d_name, "..") == 0)
- || (strcmp(next->d_name, ".") == 0)) {
- continue;
- }
- if (strlen(fileName) + strlen(next->d_name) + 1 > PATH_MAX) {
- error_msg(name_too_long);
- return FALSE;
- }
- memset(nextFile, 0, sizeof(nextFile));
- if (fileName[strlen(fileName)-1] == '/')
- sprintf(nextFile, "%s%s", fileName, next->d_name);
- else
- sprintf(nextFile, "%s/%s", fileName, next->d_name);
- if (recursive_action(nextFile, TRUE, followLinks, depthFirst,
- fileAction, dirAction, userData) == FALSE) {
- status = FALSE;
- }
- }
- closedir(dir);
- if (dirAction != NULL && depthFirst == TRUE) {
- if (dirAction(fileName, &statbuf, userData) == FALSE) {
- perror_msg("%s", fileName);
- return FALSE;
- }
- }
- if (status == FALSE)
- return FALSE;
- } else {
- if (fileAction == NULL)
- return TRUE;
- else
- return fileAction(fileName, &statbuf, userData);
- }
- return TRUE;
-}
-
-#endif /* BB_CHMOD_CHOWN_CHGRP || BB_CP_MV || BB_FIND || BB_LS || BB_INSMOD */
-
-
-
-#if defined (BB_TAR) || defined (BB_MKDIR)
-/*
- * Attempt to create the directories along the specified path, except for
- * the final component. The mode is given for the final directory only,
- * while all previous ones get default protections. Errors are not reported
- * here, as failures to restore files can be reported later.
- */
-extern int create_path(const char *name, int mode)
-{
- char *cp;
- char *cpOld;
- char buf[BUFSIZ + 1];
- int retVal = 0;
-
- strcpy(buf, name);
- for (cp = buf; *cp == '/'; cp++);
- cp = strchr(cp, '/');
- while (cp) {
- cpOld = cp;
- cp = strchr(cp + 1, '/');
- *cpOld = '\0';
- retVal = mkdir(buf, cp ? 0777 : mode);
- if (retVal != 0 && errno != EEXIST) {
- perror_msg("%s", buf);
- return FALSE;
- }
- *cpOld = '/';
- }
- return TRUE;
-}
-#endif /* BB_TAR || BB_MKDIR */
-
-
-
-#if defined (BB_CHMOD_CHOWN_CHGRP) || defined (BB_MKDIR) \
- || defined (BB_MKFIFO) || defined (BB_MKNOD) || defined (BB_AR)
-/* [ugoa]{+|-|=}[rwxst] */
-
-extern int parse_mode(const char *s, mode_t * theMode)
-{
- static const mode_t group_set[] = {
- S_ISUID | S_IRWXU, /* u */
- S_ISGID | S_IRWXG, /* g */
- S_IRWXO, /* o */
- S_ISUID | S_ISGID | S_ISVTX | S_IRWXU | S_IRWXG | S_IRWXO /* a */
- };
-
- static const mode_t mode_set[] = {
- S_IRUSR | S_IRGRP | S_IROTH, /* r */
- S_IWUSR | S_IWGRP | S_IWOTH, /* w */
- S_IXUSR | S_IXGRP | S_IXOTH, /* x */
- S_ISUID | S_ISGID, /* s */
- S_ISVTX /* t */
- };
-
- static const char group_string[] = "ugoa";
- static const char mode_string[] = "rwxst";
-
- const char *p;
-
- mode_t andMode =
- S_ISVTX | S_ISUID | S_ISGID | S_IRWXU | S_IRWXG | S_IRWXO;
- mode_t orMode = 0;
- mode_t mode;
- mode_t groups;
- char type;
- char c;
-
- if (s==NULL) {
- return (FALSE);
- }
-
- do {
- mode = 0;
- groups = 0;
- NEXT_GROUP:
- if ((c = *s++) == '\0') {
- return -1;
- }
- for (p=group_string ; *p ; p++) {
- if (*p == c) {
- groups |= group_set[(int)(p-group_string)];
- goto NEXT_GROUP;
- }
- }
- switch (c) {
- case '=':
- case '+':
- case '-':
- type = c;
- if (groups == 0) { /* The default is "all" */
- groups |= S_ISUID | S_ISGID | S_ISVTX
- | S_IRWXU | S_IRWXG | S_IRWXO;
- }
- break;
- default:
- if ((c < '0') || (c > '7') || (mode | groups)) {
- return (FALSE);
- } else {
- *theMode = strtol(--s, NULL, 8);
- return (TRUE);
- }
- }
-
- NEXT_MODE:
- if (((c = *s++) != '\0') && (c != ',')) {
- for (p=mode_string ; *p ; p++) {
- if (*p == c) {
- mode |= mode_set[(int)(p-mode_string)];
- goto NEXT_MODE;
- }
- }
- break; /* We're done so break out of loop.*/
- }
- switch (type) {
- case '=':
- andMode &= ~(groups); /* Now fall through. */
- case '+':
- orMode |= mode & groups;
- break;
- case '-':
- andMode &= ~(mode & groups);
- orMode &= ~(mode & groups);
- break;
- }
- } while (c == ',');
-
- *theMode &= andMode;
- *theMode |= orMode;
-
- return TRUE;
-}
-
-#endif
-/* BB_CHMOD_CHOWN_CHGRP || BB_MKDIR || BB_MKFIFO || BB_MKNOD */
-
-
-
-
-
-#if defined BB_CHMOD_CHOWN_CHGRP || defined BB_PS || defined BB_LS \
- || defined BB_TAR || defined BB_ID || defined BB_LOGGER \
- || defined BB_LOGNAME || defined BB_WHOAMI || defined BB_SH
-
-#if defined BB_CHMOD_CHOWN_CHGRP || defined BB_ID
-/* returns a uid given a username */
-long my_getpwnam(const char *name)
-{
- struct passwd *myuser;
-
- myuser = getpwnam(name);
- if (myuser==NULL)
- error_msg_and_die("unknown user name: %s", name);
-
- return myuser->pw_uid;
-}
-
-/* returns a gid given a group name */
-long my_getgrnam(const char *name)
-{
- struct group *mygroup;
-
- mygroup = getgrnam(name);
- if (mygroup==NULL)
- error_msg_and_die("unknown group name: %s", name);
-
- return (mygroup->gr_gid);
-}
-#endif
-
-/* gets a username given a uid */
-void my_getpwuid(char *name, long uid)
-{
- struct passwd *myuser;
-
- myuser = getpwuid(uid);
- if (myuser==NULL)
- sprintf(name, "%-8ld ", (long)uid);
- else
- strcpy(name, myuser->pw_name);
-}
-
-/* gets a groupname given a gid */
-void my_getgrgid(char *group, long gid)
-{
- struct group *mygroup;
-
- mygroup = getgrgid(gid);
- if (mygroup==NULL)
- sprintf(group, "%-8ld ", (long)gid);
- else
- strcpy(group, mygroup->gr_name);
-}
-
-#if defined BB_ID
-/* gets a gid given a user name */
-long my_getpwnamegid(const char *name)
-{
- struct group *mygroup;
- struct passwd *myuser;
-
- myuser=getpwnam(name);
- if (myuser==NULL)
- error_msg_and_die("unknown user name: %s", name);
-
- mygroup = getgrgid(myuser->pw_gid);
- if (mygroup==NULL)
- error_msg_and_die("unknown gid %ld", (long)myuser->pw_gid);
-
- return mygroup->gr_gid;
-}
-#endif /* BB_ID */
-#endif
- /* BB_CHMOD_CHOWN_CHGRP || BB_PS || BB_LS || BB_TAR \
- || BB_ID || BB_LOGGER || BB_LOGNAME || BB_WHOAMI */
-
-
-#if (defined BB_CHVT) || (defined BB_DEALLOCVT) || (defined BB_SETKEYCODES)
-
-/* From <linux/kd.h> */
-static const int KDGKBTYPE = 0x4B33; /* get keyboard type */
-static const int KB_84 = 0x01;
-static const int KB_101 = 0x02; /* this is what we always answer */
-
-int is_a_console(int fd)
-{
- char arg;
-
- arg = 0;
- return (ioctl(fd, KDGKBTYPE, &arg) == 0
- && ((arg == KB_101) || (arg == KB_84)));
-}
-
-static int open_a_console(char *fnam)
-{
- int fd;
-
- /* try read-only */
- fd = open(fnam, O_RDWR);
-
- /* if failed, try read-only */
- if (fd < 0 && errno == EACCES)
- fd = open(fnam, O_RDONLY);
-
- /* if failed, try write-only */
- if (fd < 0 && errno == EACCES)
- fd = open(fnam, O_WRONLY);
-
- /* if failed, fail */
- if (fd < 0)
- return -1;
-
- /* if not a console, fail */
- if (!is_a_console(fd)) {
- close(fd);
- return -1;
- }
-
- /* success */
- return fd;
-}
-
-/*
- * Get an fd for use with kbd/console ioctls.
- * We try several things because opening /dev/console will fail
- * if someone else used X (which does a chown on /dev/console).
- *
- * if tty_name is non-NULL, try this one instead.
- */
-
-int get_console_fd(char *tty_name)
-{
- int fd;
-
- if (tty_name) {
- if (-1 == (fd = open_a_console(tty_name)))
- return -1;
- else
- return fd;
- }
-
- fd = open_a_console("/dev/tty");
- if (fd >= 0)
- return fd;
-
- fd = open_a_console("/dev/tty0");
- if (fd >= 0)
- return fd;
-
- fd = open_a_console("/dev/console");
- if (fd >= 0)
- return fd;
-
- for (fd = 0; fd < 3; fd++)
- if (is_a_console(fd))
- return fd;
-
- error_msg("Couldnt get a file descriptor referring to the console");
- return -1; /* total failure */
-}
-
-
-#endif /* BB_CHVT || BB_DEALLOCVT || BB_SETKEYCODES */
-
-
-#if defined BB_FIND || defined BB_INSMOD
-/*
- * Routine to see if a text string is matched by a wildcard pattern.
- * Returns TRUE if the text is matched, or FALSE if it is not matched
- * or if the pattern is invalid.
- * * matches zero or more characters
- * ? matches a single character
- * [abc] matches 'a', 'b' or 'c'
- * \c quotes character c
- * Adapted from code written by Ingo Wilken, and
- * then taken from sash, Copyright (c) 1999 by David I. Bell
- * Permission is granted to use, distribute, or modify this source,
- * provided that this copyright notice remains intact.
- * Permission to distribute this code under the GPL has been granted.
- */
-extern int check_wildcard_match(const char *text, const char *pattern)
-{
- const char *retryPat;
- const char *retryText;
- int ch;
- int found;
- int len;
-
- retryPat = NULL;
- retryText = NULL;
-
- while (*text || *pattern) {
- ch = *pattern++;
-
- switch (ch) {
- case '*':
- retryPat = pattern;
- retryText = text;
- break;
-
- case '[':
- found = FALSE;
-
- while ((ch = *pattern++) != ']') {
- if (ch == '\\')
- ch = *pattern++;
-
- if (ch == '\0')
- return FALSE;
-
- if (*text == ch)
- found = TRUE;
- }
- len=strlen(text);
- if (found == FALSE && len!=0) {
- return FALSE;
- }
- if (found == TRUE) {
- if (strlen(pattern)==0 && len==1) {
- return TRUE;
- }
- if (len!=0) {
- text++;
- continue;
- }
- }
-
- /* fall into next case */
-
- case '?':
- if (*text++ == '\0')
- return FALSE;
-
- break;
-
- case '\\':
- ch = *pattern++;
-
- if (ch == '\0')
- return FALSE;
-
- /* fall into next case */
-
- default:
- if (*text == ch) {
- if (*text)
- text++;
- break;
- }
-
- if (*text) {
- pattern = retryPat;
- text = ++retryText;
- break;
- }
-
- return FALSE;
- }
-
- if (pattern == NULL)
- return FALSE;
- }
-
- return TRUE;
-}
-#endif /* BB_FIND || BB_INSMOD */
-
-
-
-
-#if defined BB_DF || defined BB_MTAB
-#include <mntent.h>
-/*
- * Given a block device, find the mount table entry if that block device
- * is mounted.
- *
- * Given any other file (or directory), find the mount table entry for its
- * filesystem.
- */
-extern struct mntent *find_mount_point(const char *name, const char *table)
-{
- struct stat s;
- dev_t mountDevice;
- FILE *mountTable;
- struct mntent *mountEntry;
-
- if (stat(name, &s) != 0)
- return 0;
-
- if ((s.st_mode & S_IFMT) == S_IFBLK)
- mountDevice = s.st_rdev;
- else
- mountDevice = s.st_dev;
-
-
- if ((mountTable = setmntent(table, "r")) == 0)
- return 0;
-
- while ((mountEntry = getmntent(mountTable)) != 0) {
- if (strcmp(name, mountEntry->mnt_dir) == 0
- || strcmp(name, mountEntry->mnt_fsname) == 0) /* String match. */
- break;
- if (stat(mountEntry->mnt_fsname, &s) == 0 && s.st_rdev == mountDevice) /* Match the device. */
- break;
- if (stat(mountEntry->mnt_dir, &s) == 0 && s.st_dev == mountDevice) /* Match the directory's mount point. */
- break;
- }
- endmntent(mountTable);
- return mountEntry;
-}
-#endif /* BB_DF || BB_MTAB */
-
-#if defined BB_INIT || defined BB_SYSLOGD
-/* try to open up the specified device */
-extern int device_open(char *device, int mode)
-{
- int m, f, fd = -1;
-
- m = mode | O_NONBLOCK;
-
- /* Retry up to 5 times */
- for (f = 0; f < 5; f++)
- if ((fd = open(device, m, 0600)) >= 0)
- break;
- if (fd < 0)
- return fd;
- /* Reset original flags. */
- if (m != mode)
- fcntl(fd, F_SETFL, mode);
- return fd;
-}
-#endif /* BB_INIT BB_SYSLOGD */
-
-
-#if defined BB_KILLALL || ( defined BB_FEATURE_LINUXRC && ( defined BB_HALT || defined BB_REBOOT || defined BB_POWEROFF ))
-#ifdef BB_FEATURE_USE_DEVPS_PATCH
-#include <linux/devps.h> /* For Erik's nifty devps device driver */
-#endif
-
-#if defined BB_FEATURE_USE_DEVPS_PATCH
-/* find_pid_by_name()
- *
- * This finds the pid of the specified process,
- * by using the /dev/ps device driver.
- *
- * Returns a list of all matching PIDs
- */
-extern pid_t* find_pid_by_name( char* pidName)
-{
- int fd, i, j;
- char device[] = "/dev/ps";
- pid_t num_pids;
- pid_t* pid_array = NULL;
- pid_t* pidList=NULL;
-
- /* open device */
- fd = open(device, O_RDONLY);
- if (fd < 0)
- perror_msg_and_die("open failed for `%s'", device);
-
- /* Find out how many processes there are */
- if (ioctl (fd, DEVPS_GET_NUM_PIDS, &num_pids)<0)
- perror_msg_and_die("\nDEVPS_GET_PID_LIST");
-
- /* Allocate some memory -- grab a few extras just in case
- * some new processes start up while we wait. The kernel will
- * just ignore any extras if we give it too many, and will trunc.
- * the list if we give it too few. */
- pid_array = (pid_t*) xcalloc( num_pids+10, sizeof(pid_t));
- pid_array[0] = num_pids+10;
-
- /* Now grab the pid list */
- if (ioctl (fd, DEVPS_GET_PID_LIST, pid_array)<0)
- perror_msg_and_die("\nDEVPS_GET_PID_LIST");
-
- /* Now search for a match */
- for (i=1, j=0; i<pid_array[0] ; i++) {
- char* p;
- struct pid_info info;
-
- info.pid = pid_array[i];
- if (ioctl (fd, DEVPS_GET_PID_INFO, &info)<0)
- perror_msg_and_die("\nDEVPS_GET_PID_INFO");
-
- /* Make sure we only match on the process name */
- p=info.command_line+1;
- while ((*p != 0) && !isspace(*(p)) && (*(p-1) != '\\')) {
- (p)++;
- }
- if (isspace(*(p)))
- *p='\0';
-
- if ((strstr(info.command_line, pidName) != NULL)
- && (strlen(pidName) == strlen(info.command_line))) {
- pidList=xrealloc( pidList, sizeof(pid_t) * (j+2));
- pidList[j++]=info.pid;
- }
- }
- if (pidList)
- pidList[j]=0;
-
- /* Free memory */
- free( pid_array);
-
- /* close device */
- if (close (fd) != 0)
- perror_msg_and_die("close failed for `%s'", device);
-
- return pidList;
-}
-#else /* BB_FEATURE_USE_DEVPS_PATCH */
-
-/* find_pid_by_name()
- *
- * This finds the pid of the specified process.
- * Currently, it's implemented by rummaging through
- * the proc filesystem.
- *
- * Returns a list of all matching PIDs
- */
-extern pid_t* find_pid_by_name( char* pidName)
-{
- DIR *dir;
- struct dirent *next;
- pid_t* pidList=NULL;
- int i=0;
-
- dir = opendir("/proc");
- if (!dir)
- perror_msg_and_die("Cannot open /proc");
-
- while ((next = readdir(dir)) != NULL) {
- FILE *status;
- char filename[256];
- char buffer[256];
-
- /* If it isn't a number, we don't want it */
- if (!isdigit(*next->d_name))
- continue;
-
- sprintf(filename, "/proc/%s/cmdline", next->d_name);
- status = fopen(filename, "r");
- if (!status) {
- continue;
- }
- fgets(buffer, 256, status);
- fclose(status);
-
- if (strstr(get_last_path_component(buffer), pidName) != NULL) {
- pidList=xrealloc( pidList, sizeof(pid_t) * (i+2));
- pidList[i++]=strtol(next->d_name, NULL, 0);
- }
- }
-
- if (pidList)
- pidList[i]=0;
- return pidList;
-}
-#endif /* BB_FEATURE_USE_DEVPS_PATCH */
-#endif /* BB_KILLALL || ( BB_FEATURE_LINUXRC && ( BB_HALT || BB_REBOOT || BB_POWEROFF )) */
-
-#ifndef DMALLOC
-/* this should really be farmed out to libbusybox.a */
-extern void *xmalloc(size_t size)
-{
- void *ptr = malloc(size);
-
- if (!ptr)
- error_msg_and_die(memory_exhausted);
- return ptr;
-}
-
-extern void *xrealloc(void *old, size_t size)
-{
- void *ptr = realloc(old, size);
- if (!ptr)
- error_msg_and_die(memory_exhausted);
- return ptr;
-}
-
-extern void *xcalloc(size_t nmemb, size_t size)
-{
- void *ptr = calloc(nmemb, size);
- if (!ptr)
- error_msg_and_die(memory_exhausted);
- return ptr;
-}
-#endif
-
-#if defined BB_NFSMOUNT || defined BB_LS || defined BB_SH || \
- defined BB_WGET || defined BB_DPKG_DEB || defined BB_TAR || \
- defined BB_LN
-# ifndef DMALLOC
-extern char * xstrdup (const char *s) {
- char *t;
-
- if (s == NULL)
- return NULL;
-
- t = strdup (s);
-
- if (t == NULL)
- error_msg_and_die(memory_exhausted);
-
- return t;
-}
-# endif
-#endif
-
-#if defined BB_NFSMOUNT
-extern char * xstrndup (const char *s, int n) {
- char *t;
-
- if (s == NULL)
- error_msg_and_die("xstrndup bug");
-
- t = xmalloc(++n);
-
- return safe_strncpy(t,s,n);
-}
-#endif
-
-#if defined BB_IFCONFIG || defined BB_ROUTE || defined BB_NFSMOUNT || \
- defined BB_FEATURE_MOUNT_LOOP
-/* Like strncpy but make sure the resulting string is always 0 terminated. */
-extern char * safe_strncpy(char *dst, const char *src, size_t size)
-{
- dst[size-1] = '\0';
- return strncpy(dst, src, size-1);
-}
-#endif
-
-#if (__GLIBC__ < 2) && (defined BB_SYSLOGD || defined BB_INIT)
-extern int vdprintf(int d, const char *format, va_list ap)
-{
- char buf[BUF_SIZE];
- int len;
-
- len = vsprintf(buf, format, ap);
- return write(d, buf, len);
-}
-#endif /* BB_SYSLOGD */
-
-
-#if defined BB_FEATURE_MOUNT_LOOP
-#include <fcntl.h>
-#include "loop.h" /* Pull in loop device support */
-
-extern int del_loop(const char *device)
-{
- int fd;
-
- if ((fd = open(device, O_RDONLY)) < 0) {
- perror_msg("%s", device);
- return (FALSE);
- }
- if (ioctl(fd, LOOP_CLR_FD, 0) < 0) {
- perror_msg("ioctl: LOOP_CLR_FD");
- return (FALSE);
- }
- close(fd);
- return (TRUE);
-}
-
-extern int set_loop(const char *device, const char *file, int offset,
- int *loopro)
-{
- struct loop_info loopinfo;
- int fd, ffd, mode;
-
- mode = *loopro ? O_RDONLY : O_RDWR;
- if ((ffd = open(file, mode)) < 0 && !*loopro
- && (errno != EROFS || (ffd = open(file, mode = O_RDONLY)) < 0)) {
- perror_msg("%s", file);
- return 1;
- }
- if ((fd = open(device, mode)) < 0) {
- close(ffd);
- perror_msg("%s", device);
- return 1;
- }
- *loopro = (mode == O_RDONLY);
-
- memset(&loopinfo, 0, sizeof(loopinfo));
- safe_strncpy(loopinfo.lo_name, file, LO_NAME_SIZE);
-
- loopinfo.lo_offset = offset;
-
- loopinfo.lo_encrypt_key_size = 0;
- if (ioctl(fd, LOOP_SET_FD, ffd) < 0) {
- perror_msg("ioctl: LOOP_SET_FD");
- close(fd);
- close(ffd);
- return 1;
- }
- if (ioctl(fd, LOOP_SET_STATUS, &loopinfo) < 0) {
- (void) ioctl(fd, LOOP_CLR_FD, 0);
- perror_msg("ioctl: LOOP_SET_STATUS");
- close(fd);
- close(ffd);
- return 1;
- }
- close(fd);
- close(ffd);
- return 0;
-}
-
-extern char *find_unused_loop_device(void)
-{
- char dev[20];
- int i, fd;
- struct stat statbuf;
- struct loop_info loopinfo;
-
- for (i = 0; i <= 7; i++) {
- sprintf(dev, "/dev/loop%d", i);
- if (stat(dev, &statbuf) == 0 && S_ISBLK(statbuf.st_mode)) {
- if ((fd = open(dev, O_RDONLY)) >= 0) {
- if (ioctl(fd, LOOP_GET_STATUS, &loopinfo) != 0) {
- if (errno == ENXIO) { /* probably free */
- close(fd);
- return strdup(dev);
- }
- }
- close(fd);
- }
- }
- }
- return NULL;
-}
-#endif /* BB_FEATURE_MOUNT_LOOP */
-
-#if defined BB_MOUNT || defined BB_DF || ( defined BB_UMOUNT && ! defined BB_MTAB)
-extern int find_real_root_device_name(char* name)
-{
- DIR *dir;
- struct dirent *entry;
- struct stat statBuf, rootStat;
- char fileName[BUFSIZ];
-
- if (stat("/", &rootStat) != 0) {
- error_msg("could not stat '/'");
- return( FALSE);
- }
-
- dir = opendir("/dev");
- if (!dir) {
- error_msg("could not open '/dev'");
- return( FALSE);
- }
-
- while((entry = readdir(dir)) != NULL) {
-
- /* Must skip ".." since that is "/", and so we
- * would get a false positive on ".." */
- if (strcmp(entry->d_name, "..") == 0)
- continue;
-
- snprintf( fileName, strlen(name)+1, "/dev/%s", entry->d_name);
-
- if (stat(fileName, &statBuf) != 0)
- continue;
- /* Some char devices have the same dev_t as block
- * devices, so make sure this is a block device */
- if (! S_ISBLK(statBuf.st_mode))
- continue;
- if (statBuf.st_rdev == rootStat.st_rdev) {
- strcpy(name, fileName);
- return ( TRUE);
- }
- }
-
- return( FALSE);
-}
-#endif
-
-
-/* get_line_from_file() - This function reads an entire line from a text file
- * up to a newline. It returns a malloc'ed char * which must be stored and
- * free'ed by the caller. */
-extern char *get_line_from_file(FILE *file)
-{
- static const int GROWBY = 80; /* how large we will grow strings by */
-
- int ch;
- int idx = 0;
- char *linebuf = NULL;
- int linebufsz = 0;
-
- while (1) {
- ch = fgetc(file);
- if (ch == EOF)
- break;
- /* grow the line buffer as necessary */
- while (idx > linebufsz-2)
- linebuf = xrealloc(linebuf, linebufsz += GROWBY);
- linebuf[idx++] = (char)ch;
- if ((char)ch == '\n')
- break;
- }
-
- if (idx == 0)
- return NULL;
-
- linebuf[idx] = 0;
- return linebuf;
-}
-
-#if defined BB_CAT
-extern void print_file(FILE *file)
-{
- int c;
-
- while ((c = getc(file)) != EOF)
- putc(c, stdout);
- fclose(file);
- fflush(stdout);
-}
-
-extern int print_file_by_name(char *filename)
-{
- FILE *file;
- if ((file = wfopen(filename, "r")) == NULL)
- return FALSE;
- print_file(file);
- return TRUE;
-}
-#endif /* BB_CAT */
-
-#if defined BB_ECHO || defined BB_SH || defined BB_TR
-char process_escape_sequence(char **ptr)
-{
- static const char charmap[] = {
- 'a', 'b', 'f', 'n', 'r', 't', 'v', '\\', 0,
- '\a', '\b', '\f', '\n', '\r', '\t', '\v', '\\', '\\' };
-
- const char *p;
- char *q;
- int num_digits;
- unsigned int n;
-
- n = 0;
- q = *ptr;
-
- for ( num_digits = 0 ; num_digits < 3 ; ++num_digits) {
- if ((*q < '0') || (*q > '7')) { /* not a digit? */
- break;
- }
- n = n * 8 + (*q++ - '0');
- }
-
- if (num_digits == 0) { /* mnemonic escape sequence? */
- for (p=charmap ; *p ; p++) {
- if (*p == *q) {
- q++;
- break;
- }
- }
- n = *(p+(sizeof(charmap)/2));
- }
-
- /* doesn't hurt to fall through to here from mnemonic case */
- if (n > UCHAR_MAX) { /* is octal code too big for a char? */
- n /= 8; /* adjust value and */
- --q; /* back up one char */
- }
-
- *ptr = q;
- return (char) n;
-}
-#endif
-
-#if defined BB_BASENAME || defined BB_LN || defined BB_SH || defined BB_INIT || \
- ! defined BB_FEATURE_USE_DEVPS_PATCH || defined BB_WGET
-char *get_last_path_component(char *path)
-{
- char *s=path+strlen(path)-1;
-
- /* strip trailing slashes */
- while (s != path && *s == '/') {
- *s-- = '\0';
- }
-
- /* find last component */
- s = strrchr(path, '/');
- if (s == NULL || s[1] == '\0')
- return path;
- else
- return s+1;
-}
-#endif
-
-#if defined BB_GREP || defined BB_SED
-#include <regex.h>
-void xregcomp(regex_t *preg, const char *regex, int cflags)
-{
- int ret;
- if ((ret = regcomp(preg, regex, cflags)) != 0) {
- int errmsgsz = regerror(ret, preg, NULL, 0);
- char *errmsg = xmalloc(errmsgsz);
- regerror(ret, preg, errmsg, errmsgsz);
- error_msg_and_die("xregcomp: %s", errmsg);
- }
-}
-#endif
-
-#if defined BB_CAT || defined BB_HEAD || defined BB_WC
-FILE *wfopen(const char *path, const char *mode)
-{
- FILE *fp;
- if ((fp = fopen(path, mode)) == NULL) {
- perror_msg("%s", path);
- errno = 0;
- }
- return fp;
-}
-#endif
-
-#if defined BB_HOSTNAME || defined BB_LOADACM || defined BB_MORE \
- || defined BB_SED || defined BB_SH || defined BB_TAR || defined BB_UNIQ \
- || defined BB_WC || defined BB_CMP || defined BB_SORT || defined BB_WGET \
- || defined BB_MOUNT || defined BB_ROUTE || defined BB_MKFS_MINIX
-FILE *xfopen(const char *path, const char *mode)
-{
- FILE *fp;
- if ((fp = fopen(path, mode)) == NULL)
- perror_msg_and_die("%s", path);
- return fp;
-}
-#endif
-
-static int applet_name_compare(const void *x, const void *y)
-{
- const char *name = x;
- const struct BB_applet *applet = y;
-
- return strcmp(name, applet->name);
-}
-
-extern size_t NUM_APPLETS;
-
-struct BB_applet *find_applet_by_name(const char *name)
-{
- return bsearch(name, applets, NUM_APPLETS, sizeof(struct BB_applet),
- applet_name_compare);
-}
-
-void run_applet_by_name(const char *name, int argc, char **argv)
-{
- /* Do a binary search to find the applet entry given the name. */
- if ((applet_using = find_applet_by_name(name)) != NULL) {
- applet_name = applet_using->name;
- if (argv[1] && strcmp(argv[1], "--help") == 0)
- show_usage();
- exit((*(applet_using->main)) (argc, argv));
- }
-}
-
-#if defined BB_DD || defined BB_TAIL || defined BB_STTY
-unsigned long parse_number(const char *numstr,
- const struct suffix_mult *suffixes)
-{
- const struct suffix_mult *sm;
- unsigned long int ret;
- int len;
- char *end;
-
- ret = strtoul(numstr, &end, 10);
- if (numstr == end)
- error_msg_and_die("invalid number `%s'", numstr);
- while (end[0] != '\0') {
- sm = suffixes;
- while ( sm != 0 ) {
- if(sm->suffix) {
- len = strlen(sm->suffix);
- if (strncmp(sm->suffix, end, len) == 0) {
- ret *= sm->mult;
- end += len;
- break;
- }
- sm++;
-
- } else
- sm = 0;
- }
- if (sm == 0)
- error_msg_and_die("invalid number `%s'", numstr);
- }
- return ret;
-}
-#endif
-
-#if defined BB_DD || defined BB_NC || defined BB_TAIL
-ssize_t safe_read(int fd, void *buf, size_t count)
-{
- ssize_t n;
-
- do {
- n = read(fd, buf, count);
- } while (n < 0 && errno == EINTR);
-
- return n;
-}
-#endif
-
-#ifdef BB_FEATURE_HUMAN_READABLE
-const char *make_human_readable_str(unsigned long val, unsigned long hr)
-{
- int i=0;
- static char str[10] = "\0";
- static const char strings[] = { 'k', 'M', 'G', 'T', 0 };
- unsigned long divisor = 1;
-
- if(val == 0)
- return("0");
- if(hr)
- snprintf(str, 9, "%ld", val/hr);
- else {
- while(val >= divisor && i <= 4) {
- divisor=divisor<<10, i++;
- }
- divisor=divisor>>10, i--;
- snprintf(str, 9, "%.1Lf%c", (long double)(val)/divisor, strings[i]);
- }
- return(str);
-}
-#endif
-
-#if defined(BB_GREP) || defined(BB_HOSTNAME) || defined(BB_SED) || defined(BB_TAR) || defined(BB_WGET) || defined(BB_XARGS) || defined(BB_SH)
-void chomp(char *s)
-{
- size_t len = strlen(s);
-
- if (len == 0)
- return;
-
- if (s[len-1] == '\n')
- s[len-1] = '\0';
-}
-#endif
-
-#if defined(BB_KLOGD) || defined(BB_LOGGER)
-void syslog_msg_with_name(const char *name, int facility, int pri, const char *msg)
-{
- openlog(name, 0, facility);
- syslog(pri, "%s", msg);
- closelog();
-}
-
-void syslog_msg(int facility, int pri, const char *msg)
-{
- syslog_msg_with_name(applet_using->name, facility, pri, msg);
-}
-#endif
-
-#if defined(BB_SH)
-void trim(char *s)
-{
- /* trim trailing whitespace */
- while (isspace(s[strlen(s)-1]))
- s[strlen(s)-1]='\0';
-
- /* trim leading whitespace */
- memmove(s, &s[strspn(s, " \n\r\t\v")], strlen(s));
-
-}
-#endif
-
-#ifdef BB_FEATURE_RM_INTERACTIVE
- #if defined (BB_CP_MV) || defined (BB_RM)
-int ask_confirmation()
-{
- int c = '\0';
- int ret = 0;
-
- while (c != '\n') {
- c = getchar();
- if ( c != '\n' ) {
- ret = ((c=='y')||(c=='Y')) ? 1 : 0;
- }
- }
- return ret;
-}
- #endif
-#endif
-
-/* END CODE */
-/*
-Local Variables:
-c-file-style: "linux"
-c-basic-offset: 4
-tab-width: 4
-End:
-*/