diff options
Diffstat (limited to 'mdk-stage1/insmod-busybox/utility.c')
| -rw-r--r-- | mdk-stage1/insmod-busybox/utility.c | 1759 |
1 files changed, 0 insertions, 1759 deletions
diff --git a/mdk-stage1/insmod-busybox/utility.c b/mdk-stage1/insmod-busybox/utility.c deleted file mode 100644 index ffd323347..000000000 --- a/mdk-stage1/insmod-busybox/utility.c +++ /dev/null @@ -1,1759 +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 "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 recursiveAction */ -#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 <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 <sys/ioctl.h> -#include <sys/utsname.h> /* for uname(2) */ - -/* Busybox mount uses either /proc/filesystems or /dev/mtab to get the - * list of available filesystems used for the -t auto option */ -#if defined BB_FEATURE_USE_PROCFS && defined BB_FEATURE_USE_DEVPS_PATCH -//#error Sorry, but busybox can't use both /proc and /dev/ps at the same time -- Pick one and try again. -#error "Sorry, but busybox can't use both /proc and /dev/ps at the same time -- Pick one and try again." -#endif - - -#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_PROCFS -const char mtab_file[] = "/proc/mounts"; -# else -# if defined BB_FEATURE_USE_DEVPS_PATCH -const char mtab_file[] = "/dev/mtab"; -# else -# error With (BB_MOUNT||BB_UMOUNT||BB_DF) defined, you must define either BB_MTAB or ( BB_FEATURE_USE_PROCFS | BB_FEATURE_USE_DEVPS_PATCH) -# endif -# endif -# endif -#endif - -#ifdef _STANDALONE_ -void errorMsg(const char *s, ...) -{ - va_list p; - - fflush(stdout); - printf("busybox: "); - va_start(p, s); - vprintf(s, p); - va_end(p); - printf("\n"); - fflush(stdout); -} - -extern void logperror(char *s) -{ - perror(s); -} - -void fatalError(const char *s, ...) -{ - va_list p; - - fflush(stdout); - fprintf(stdout, "busybox: "); - va_start(p, s); - vfprintf(stdout, s, p); - va_end(p); - fprintf(stdout, "\n"); - fflush(stdout); - exit(FALSE); -} -#else /* _STANDALONE_ */ -#include "../log.h" -extern void errorMsg(const char *s, ...) -{ - va_list p; - - va_start(p, s); - vlog_message(s, p); - va_end(p); -} - -extern void logperror(char *s) -{ - log_perror(s); -} - -extern void fatalError(const char *s, ...) -{ - va_list p; - - va_start(p, s); - vlog_message(s, p); - va_end(p); - while (1); -} -#endif /* _STANDALONE_ */ - - -#if defined BB_INIT -/* 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; - int major = 0, minor = 0, patch = 0; - - if (uname(&name) == -1) { - perror("cannot get system information"); - return (0); - } - sscanf(name.version, "%d.%d.%d", &major, &minor, &patch); - return major * 65536 + minor * 256 + patch; -} -#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 - -#ifndef __NR_umount2 -#define __NR_umount2 52 -#endif - -/* Include our own version of <sys/mount.h>, since libc5 doesn't - * know about umount2 */ -extern _syscall1(int, umount, const char *, special_file); -extern _syscall2(int, umount2, const char *, special_file, int, flags); -extern _syscall5(int, mount, const char *, special_file, const char *, dir, - const char *, fstype, unsigned long int, rwflag, const void *, data); -#endif - -#if defined BB_INSMOD || defined BB_LSMOD -#ifndef __NR_query_module -#define __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_AR) -/* - * Return TRUE if a fileName is a directory. - * Nonexistant files return FALSE. - */ -int isDirectory(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 readSize bytes between two file descriptors - */ -int copySubFile(int srcFd, int dstFd, size_t remaining) -{ - size_t size; - char buffer[BUFSIZ]; - - while (remaining > 0) { - if (remaining > BUFSIZ) - size = BUFSIZ; - else - size = remaining; - if (fullWrite(dstFd, buffer, fullRead(srcFd, buffer, size)) < size) - return(FALSE); - remaining -= size; - } - return (TRUE); -} -#endif - - -#if defined (BB_CP_MV) -/* - * 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 -copyFile(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(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)) { - errorMsg("Copying file \"%s\" to itself\n", 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(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(srcName); - return FALSE; - } - link_val[link_size] = '\0'; - status = symlink(link_val, destName); - if (status < 0) { - perror(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(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(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(srcName); - return FALSE; - } - - wfd = open(destName, O_WRONLY | O_CREAT | O_TRUNC, - srcStatBuf.st_mode); - if (wfd < 0) { - perror(destName); - close(rfd); - return FALSE; - } - - if (copySubFile(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(destName); - exit FALSE; - } - if (chmod(destName, srcStatBuf.st_mode) < 0) { - perror(destName); - exit FALSE; - } - times.actime = srcStatBuf.st_atime; - times.modtime = srcStatBuf.st_mtime; - if (utime(destName, ×) < 0) { - perror(destName); - exit FALSE; - } - } - - return TRUE; - - error_exit: - perror(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 -}; - -#define MODE1 "rwxrwxrwx" -#define MODE0 "---------" -#define SMODE1 "..s..s..t" -#define 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 *modeString(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 *timeString(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_TAR || defined BB_CP_MV || defined BB_AR -/* - * 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 fullWrite(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 /* BB_TAR || BB_CP_MV || BB_AR */ - - -#if defined BB_TAR || defined BB_TAIL || defined BB_AR || defined BB_SH || defined BB_CP_MV -/* - * 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 fullRead(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). - * - * Unfortunatly, 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 recursiveAction(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(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; - - dir = opendir(fileName); - if (!dir) { - perror(fileName); - return FALSE; - } - if (dirAction != NULL && depthFirst == FALSE) { - status = dirAction(fileName, &statbuf, userData); - if (status == FALSE) { - perror(fileName); - return FALSE; - } - } - while ((next = readdir(dir)) != NULL) { - char nextFile[BUFSIZ + 1]; - - if ((strcmp(next->d_name, "..") == 0) - || (strcmp(next->d_name, ".") == 0)) { - continue; - } - if (strlen(fileName) + strlen(next->d_name) + 1 > BUFSIZ) { - errorMsg("name_too_long"); - return FALSE; - } - memset(nextFile, 0, sizeof(nextFile)); - sprintf(nextFile, "%s/%s", fileName, next->d_name); - status = - recursiveAction(nextFile, TRUE, followLinks, depthFirst, - fileAction, dirAction, userData); - if (status == FALSE) { - closedir(dir); - return FALSE; - } - } - status = closedir(dir); - if (status < 0) { - perror(fileName); - return FALSE; - } - if (dirAction != NULL && depthFirst == TRUE) { - status = dirAction(fileName, &statbuf, userData); - if (status == FALSE) { - perror(fileName); - 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) || defined (BB_AR) -/* - * 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 createPath(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(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) -{ - mode_t andMode = - - S_ISVTX | S_ISUID | S_ISGID | S_IRWXU | S_IRWXG | S_IRWXO; - mode_t orMode = 0; - mode_t mode = 0; - mode_t groups = 0; - char type; - char c; - - if (s==NULL) - return (FALSE); - - do { - for (;;) { - switch (c = *s++) { - case '\0': - return -1; - case 'u': - groups |= S_ISUID | S_IRWXU; - continue; - case 'g': - groups |= S_ISGID | S_IRWXG; - continue; - case 'o': - groups |= S_IRWXO; - continue; - case 'a': - groups |= S_ISUID | S_ISGID | S_IRWXU | S_IRWXG | S_IRWXO; - continue; - case '+': - case '=': - case '-': - type = c; - if (groups == 0) /* The default is "all" */ - groups |= - S_ISUID | S_ISGID | S_IRWXU | S_IRWXG | S_IRWXO; - break; - default: - if (isdigit(c) && c >= '0' && c <= '7' && - mode == 0 && groups == 0) { - *theMode = strtol(--s, NULL, 8); - return (TRUE); - } else - return (FALSE); - } - break; - } - - while ((c = *s++) != '\0') { - switch (c) { - case ',': - break; - case 'r': - mode |= S_IRUSR | S_IRGRP | S_IROTH; - continue; - case 'w': - mode |= S_IWUSR | S_IWGRP | S_IWOTH; - continue; - case 'x': - mode |= S_IXUSR | S_IXGRP | S_IXOTH; - continue; - case 's': - mode |= S_IXGRP | S_ISUID | S_ISGID; - continue; - case 't': - mode |= 0; - continue; - default: - *theMode &= andMode; - *theMode |= orMode; - return (TRUE); - } - break; - } - switch (type) { - case '=': - andMode &= ~(groups); - /* fall through */ - case '+': - orMode |= mode & groups; - break; - case '-': - andMode &= ~(mode & groups); - orMode &= andMode; - 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 - -/* This parses 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 or wanted for embedded - * systems. - * - * /etc/passwd entries look like this: - * root:x:0:0:root:/root:/bin/bash - * and /etc/group entries look like this: - * root:x:0: - * - * This uses buf as storage to hold things. - * - */ -unsigned long my_getid(const char *filename, char *name, long id, long *gid) -{ - FILE *file; - char *rname, *start, *end, buf[128]; - long rid; - long rgid = 0; - - file = fopen(filename, "r"); - if (file == NULL) { - /* Do not complain. It is ok for /etc/passwd and - * friends to be missing... */ - return (-1); - } - - while (fgets(buf, 128, file) != NULL) { - if (buf[0] == '#') - continue; - - /* username/group name */ - start = buf; - end = strchr(start, ':'); - if (end == NULL) - continue; - *end = '\0'; - rname = start; - - /* password */ - start = end + 1; - end = strchr(start, ':'); - if (end == NULL) - continue; - - /* uid in passwd, gid in group */ - start = end + 1; - rid = (unsigned long) strtol(start, &end, 10); - if (end == start) - continue; - - /* gid in passwd */ - start = end + 1; - rgid = (unsigned long) strtol(start, &end, 10); - - if (name) { - if (0 == strcmp(rname, name)) { - if (gid) *gid = rgid; - fclose(file); - return (rid); - } - } - if (id != -1 && id == rid) { - strncpy(name, rname, 8); - if (gid) *gid = rgid; - fclose(file); - return (TRUE); - } - } - fclose(file); - return (-1); -} - -/* returns a uid given a username */ -long my_getpwnam(char *name) -{ - return my_getid("/etc/passwd", name, -1, NULL); -} - -/* returns a gid given a group name */ -long my_getgrnam(char *name) -{ - return my_getid("/etc/group", name, -1, NULL); -} - -/* gets a username given a uid */ -void my_getpwuid(char *name, long uid) -{ - my_getid("/etc/passwd", name, uid, NULL); -} - -/* gets a groupname given a gid */ -void my_getgrgid(char *group, long gid) -{ - my_getid("/etc/group", group, gid, NULL); -} - -/* gets a gid given a user name */ -long my_getpwnamegid(char *name) -{ - long gid; - my_getid("/etc/passwd", name, -1, &gid); - return gid; -} - -#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> */ -#define KDGKBTYPE 0x4B33 /* get keyboard type */ -#define KB_84 0x01 -#define 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; - - errorMsg("Couldnt get a file descriptor referring to the console\n"); - 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 -/* - * 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 *findMountPoint(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_DD || defined BB_TAIL -/* - * Read a number with a possible multiplier. - * Returns -1 if the number format is illegal. - */ -extern long getNum(const char *cp) -{ - long value; - - if (!isDecimal(*cp)) - return -1; - - value = 0; - - while (isDecimal(*cp)) - value = value * 10 + *cp++ - '0'; - - switch (*cp++) { - case 'M': - case 'm': /* `tail' uses it traditionally */ - value *= 1048576; - break; - - case 'k': - value *= 1024; - break; - - case 'b': - value *= 512; - break; - - case 'w': - value *= 2; - break; - - case '\0': - return value; - - default: - return -1; - } - - if (*cp) - return -1; - - return value; -} -#endif /* BB_DD || BB_TAIL */ - - -#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 -/* findPidByName() - * - * 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* findPidByName( 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) - fatalError( "open failed for `%s': %s\n", device, strerror (errno)); - - /* Find out how many processes there are */ - if (ioctl (fd, DEVPS_GET_NUM_PIDS, &num_pids)<0) - fatalError( "\nDEVPS_GET_PID_LIST: %s\n", strerror (errno)); - - /* 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) - fatalError( "\nDEVPS_GET_PID_LIST: %s\n", strerror (errno)); - - /* 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) - fatalError( "\nDEVPS_GET_PID_INFO: %s\n", strerror (errno)); - - /* 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) - fatalError( "close failed for `%s': %s\n",device, strerror (errno)); - - return pidList; -} -#else /* BB_FEATURE_USE_DEVPS_PATCH */ -#if ! defined BB_FEATURE_USE_PROCFS -#error Sorry, I depend on the /proc filesystem right now. -#endif - -/* findPidByName() - * - * 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* findPidByName( char* pidName) -{ - DIR *dir; - struct dirent *next; - pid_t* pidList=NULL; - int i=0; - - dir = opendir("/proc"); - if (!dir) - fatalError( "Cannot open /proc: %s\n", strerror (errno)); - - 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) - fatalError("memory_exhausted"); - return ptr; -} - -extern void *xrealloc(void *old, size_t size) -{ - void *ptr; - if (!size) - size = 1; - ptr = realloc(old, size); - if (!ptr) - fatalError("memory_exhausted"); - return ptr; -} - -extern void *xcalloc(size_t nmemb, size_t size) -{ - void *ptr = calloc(nmemb, size); - if (!ptr) - fatalError("memory_exhausted"); - return ptr; -} -#endif - -#if defined BB_FEATURE_NFSMOUNT || defined BB_SH || defined BB_LS -# ifndef DMALLOC -extern char * xstrdup (const char *s) { - char *t; - - if (s == NULL) - return NULL; - - t = strdup (s); - - if (t == NULL) - fatalError("memory_exhausted"); - - return t; -} -# endif -#endif - -#if defined BB_FEATURE_NFSMOUNT -extern char * xstrndup (const char *s, int n) { - char *t; - - if (s == NULL) - fatalError("xstrndup bug"); - - t = xmalloc(n+1); - strncpy(t,s,n); - t[n] = 0; - - return t; -} -#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(device); - return (FALSE); - } - if (ioctl(fd, LOOP_CLR_FD, 0) < 0) { - perror("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(file); - return 1; - } - if ((fd = open(device, mode)) < 0) { - close(ffd); - perror(device); - return 1; - } - *loopro = (mode == O_RDONLY); - - memset(&loopinfo, 0, sizeof(loopinfo)); - strncpy(loopinfo.lo_name, file, LO_NAME_SIZE); - loopinfo.lo_name[LO_NAME_SIZE - 1] = 0; - - loopinfo.lo_offset = offset; - - loopinfo.lo_encrypt_key_size = 0; - if (ioctl(fd, LOOP_SET_FD, ffd) < 0) { - perror("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("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) == -1) { - 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) { - errorMsg("could not stat '/'\n"); - return( FALSE); - } - - dir = opendir("/dev"); - if (!dir) { - errorMsg("could not open '/dev'\n"); - 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; - file = fopen(filename, "r"); - if (file == NULL) { - return FALSE; - } - print_file(file); - return TRUE; -} -#endif /* BB_CAT || BB_LSMOD */ - -#if defined BB_ECHO || defined BB_TR -char process_escape_sequence(char **ptr) -{ - char c; - - switch (c = *(*ptr)++) { - case 'a': - c = '\a'; - break; - case 'b': - c = '\b'; - break; - case 'f': - c = '\f'; - break; - case 'n': - c = '\n'; - break; - case 't': - c = '\t'; - break; - case 'v': - c = '\v'; - break; - case '\\': - c = '\\'; - break; - case '0': case '1': case '2': case '3': - case '4': case '5': case '6': case '7': - c -= '0'; - if ('0' <= **ptr && **ptr <= '7') { - c = c * 8 + (*(*ptr)++ - '0'); - if ('0' <= **ptr && **ptr <= '7') - c = c * 8 + (*(*ptr)++ - '0'); - } - break; - default: - (*ptr)--; - c = '\\'; - break; - } - return c; -} -#endif - -#if defined BB_BASENAME || defined BB_LN || defined BB_SH -char *get_last_path_component(char *path) -{ - char *s=path+strlen(path)-1; - - /* strip trailing slashes */ - while (s && *s == '/') { - *s-- = '\0'; - } - - /* find last component */ - s = strrchr(path, '/'); - if (s==NULL) return path; - else return s+1; -} -#endif - -#if defined BB_GREP || defined BB_SED -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); - fatalError("bb_regcomp: %s\n", errmsg); - } -} -#endif - -/* END CODE */ -/* -Local Variables: -c-file-style: "linux" -c-basic-offset: 4 -tab-width: 4 -End: -*/ |