diff options
Diffstat (limited to 'package/makedevs')
| -rw-r--r-- | package/makedevs/Config.in | 5 | ||||
| -rw-r--r-- | package/makedevs/makedevs.c | 535 | ||||
| -rw-r--r-- | package/makedevs/makedevs.mk | 35 |
3 files changed, 575 insertions, 0 deletions
diff --git a/package/makedevs/Config.in b/package/makedevs/Config.in new file mode 100644 index 000000000..4f8c38d0a --- /dev/null +++ b/package/makedevs/Config.in @@ -0,0 +1,5 @@ +config BR2_PACKAGE_MAKEDEVS + bool "makedevs" + help + The makedevs utility allows to create a set of device files + according to a configuration file.
\ No newline at end of file diff --git a/package/makedevs/makedevs.c b/package/makedevs/makedevs.c new file mode 100644 index 000000000..5ca45e9ae --- /dev/null +++ b/package/makedevs/makedevs.c @@ -0,0 +1,535 @@ +/* vi: set sw=4 ts=4: */ +/* + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License version 2 as + * published by the Free Software Foundation. + * + * 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 Library 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. + * + */ + +#define _GNU_SOURCE +#include <stdio.h> +#include <stdlib.h> +#include <string.h> +#include <fcntl.h> +#include <getopt.h> +#include <time.h> +#include <pwd.h> +#include <grp.h> +#include <unistd.h> +#include <ctype.h> +#include <errno.h> +#include <libgen.h> +#include <stdarg.h> +#include <sys/stat.h> +#include <sys/types.h> +#ifndef __APPLE__ +#include <sys/sysmacros.h> /* major() and minor() */ +#endif + +const char *bb_applet_name; + +void bb_verror_msg(const char *s, va_list p) +{ + fflush(stdout); + fprintf(stderr, "%s: ", bb_applet_name); + vfprintf(stderr, s, p); +} + +void bb_error_msg(const char *s, ...) +{ + va_list p; + + va_start(p, s); + bb_verror_msg(s, p); + va_end(p); + putc('\n', stderr); +} + +void bb_error_msg_and_die(const char *s, ...) +{ + va_list p; + + va_start(p, s); + bb_verror_msg(s, p); + va_end(p); + putc('\n', stderr); + exit(1); +} + +void bb_vperror_msg(const char *s, va_list p) +{ + int err=errno; + if(s == 0) s = ""; + bb_verror_msg(s, p); + if (*s) s = ": "; + fprintf(stderr, "%s%s\n", s, strerror(err)); +} + +void bb_perror_msg(const char *s, ...) +{ + va_list p; + + va_start(p, s); + bb_vperror_msg(s, p); + va_end(p); +} + +void bb_perror_msg_and_die(const char *s, ...) +{ + va_list p; + + va_start(p, s); + bb_vperror_msg(s, p); + va_end(p); + exit(1); +} + +FILE *bb_xfopen(const char *path, const char *mode) +{ + FILE *fp; + if ((fp = fopen(path, mode)) == NULL) + bb_perror_msg_and_die("%s", path); + return fp; +} + +enum { + FILEUTILS_PRESERVE_STATUS = 1, + FILEUTILS_DEREFERENCE = 2, + FILEUTILS_RECUR = 4, + FILEUTILS_FORCE = 8, + FILEUTILS_INTERACTIVE = 16 +}; +int bb_make_directory (char *path, long mode, int flags) +{ + mode_t mask; + const char *fail_msg; + char *s = path; + char c; + struct stat st; + + mask = umask(0); + if (mode == -1) { + umask(mask); + mode = (S_IXUSR | S_IXGRP | S_IXOTH | + S_IWUSR | S_IWGRP | S_IWOTH | + S_IRUSR | S_IRGRP | S_IROTH) & ~mask; + } else { + umask(mask & ~0300); + } + + do { + c = 0; + + if (flags & FILEUTILS_RECUR) { /* Get the parent. */ + /* Bypass leading non-'/'s and then subsequent '/'s. */ + while (*s) { + if (*s == '/') { + do { + ++s; + } while (*s == '/'); + c = *s; /* Save the current char */ + *s = 0; /* and replace it with nul. */ + break; + } + ++s; + } + } + + if (mkdir(path, 0777) < 0) { + /* If we failed for any other reason than the directory + * already exists, output a diagnostic and return -1.*/ + if ((errno != EEXIST && errno != EISDIR) + || !(flags & FILEUTILS_RECUR) + || (stat(path, &st) < 0 || !S_ISDIR(st.st_mode))) { + fail_msg = "create"; + umask(mask); + break; + } + /* Since the directory exists, don't attempt to change + * permissions if it was the full target. Note that + * this is not an error conditon. */ + if (!c) { + umask(mask); + return 0; + } + } + + if (!c) { + /* Done. If necessary, updated perms on the newly + * created directory. Failure to update here _is_ + * an error.*/ + umask(mask); + if ((mode != -1) && (chmod(path, mode) < 0)){ + fail_msg = "set permissions of"; + break; + } + return 0; + } + + /* Remove any inserted nul from the path (recursive mode). */ + *s = c; + + } while (1); + + bb_perror_msg ("Cannot %s directory `%s'", fail_msg, path); + return -1; +} + +const char * const bb_msg_memory_exhausted = "memory exhausted"; + +void *xmalloc(size_t size) +{ + void *ptr = malloc(size); + if (ptr == NULL && size != 0) + bb_error_msg_and_die(bb_msg_memory_exhausted); + return ptr; +} + +void *xcalloc(size_t nmemb, size_t size) +{ + void *ptr = calloc(nmemb, size); + if (ptr == NULL && nmemb != 0 && size != 0) + bb_error_msg_and_die(bb_msg_memory_exhausted); + return ptr; +} + +void *xrealloc(void *ptr, size_t size) +{ + ptr = realloc(ptr, size); + if (ptr == NULL && size != 0) + bb_error_msg_and_die(bb_msg_memory_exhausted); + return ptr; +} + +char *private_get_line_from_file(FILE *file, int c) +{ +#define GROWBY (80) /* how large we will grow strings by */ + + int ch; + int idx = 0; + char *linebuf = NULL; + int linebufsz = 0; + + while ((ch = getc(file)) != EOF) { + /* grow the line buffer as necessary */ + if (idx > linebufsz - 2) { + linebuf = xrealloc(linebuf, linebufsz += GROWBY); + } + linebuf[idx++] = (char)ch; + if (!ch) return linebuf; + if (c<2 && ch == '\n') { + if (c) { + --idx; + } + break; + } + } + if (linebuf) { + if (ferror(file)) { + free(linebuf); + return NULL; + } + linebuf[idx] = 0; + } + return linebuf; +} + +char *bb_get_chomped_line_from_file(FILE *file) +{ + return private_get_line_from_file(file, 1); +} + +long my_getpwnam(const char *name) +{ + struct passwd *myuser; + + myuser = getpwnam(name); + if (myuser==NULL) + bb_error_msg_and_die("unknown user name: %s", name); + + return myuser->pw_uid; +} + +long my_getgrnam(const char *name) +{ + struct group *mygroup; + + mygroup = getgrnam(name); + if (mygroup==NULL) + bb_error_msg_and_die("unknown group name: %s", name); + + return (mygroup->gr_gid); +} + +unsigned long get_ug_id(const char *s, long (*my_getxxnam)(const char *)) +{ + unsigned long r; + char *p; + + r = strtoul(s, &p, 10); + if (*p || (s == p)) { + r = my_getxxnam(s); + } + + return r; +} + +char * last_char_is(const char *s, int c) +{ + char *sret = (char *)s; + if (sret) { + sret = strrchr(sret, c); + if(sret != NULL && *(sret+1) != 0) + sret = NULL; + } + return sret; +} + +void bb_xasprintf(char **string_ptr, const char *format, ...) +{ + va_list p; + int r; + + va_start(p, format); + r = vasprintf(string_ptr, format, p); + va_end(p); + + if (r < 0) { + bb_perror_msg_and_die("bb_xasprintf"); + } +} + +char *concat_path_file(const char *path, const char *filename) +{ + char *outbuf; + char *lc; + + if (!path) + path = ""; + lc = last_char_is(path, '/'); + while (*filename == '/') + filename++; + bb_xasprintf(&outbuf, "%s%s%s", path, (lc==NULL ? "/" : ""), filename); + + return outbuf; +} + +void bb_show_usage(void) +{ + fprintf(stderr, "%s: [-d device_table] rootdir\n\n", bb_applet_name); + fprintf(stderr, "Creates a batch of special files as specified in a device table.\n"); + fprintf(stderr, "Device table entries take the form of:\n"); + fprintf(stderr, "type mode user group major minor start increment count\n\n"); + fprintf(stderr, "Where name is the file name, type can be one of:\n"); + fprintf(stderr, " f A regular file\n"); + fprintf(stderr, " d Directory\n"); + fprintf(stderr, " c Character special device file\n"); + fprintf(stderr, " b Block special device file\n"); + fprintf(stderr, " p Fifo (named pipe)\n"); + fprintf(stderr, "uid is the user id for the target file, gid is the group id for the\n"); + fprintf(stderr, "target file. The rest of the entries (major, minor, etc) apply to\n"); + fprintf(stderr, "to device special files. A '-' may be used for blank entries.\n\n"); + fprintf(stderr, "For example:\n"); + fprintf(stderr, "<name> <type> <mode> <uid> <gid> <major> <minor> <start> <inc> <count>\n"); + fprintf(stderr, "/dev d 755 0 0 - - - - -\n"); + fprintf(stderr, "/dev/console c 666 0 0 5 1 - - -\n"); + fprintf(stderr, "/dev/null c 666 0 0 1 3 0 0 -\n"); + fprintf(stderr, "/dev/zero c 666 0 0 1 5 0 0 -\n"); + fprintf(stderr, "/dev/hda b 640 0 0 3 0 0 0 -\n"); + fprintf(stderr, "/dev/hda b 640 0 0 3 1 1 1 15\n\n"); + fprintf(stderr, "Will Produce:\n"); + fprintf(stderr, "/dev\n"); + fprintf(stderr, "/dev/console\n"); + fprintf(stderr, "/dev/null\n"); + fprintf(stderr, "/dev/zero\n"); + fprintf(stderr, "/dev/hda\n"); + fprintf(stderr, "/dev/hda[0-15]\n"); + exit(1); +} + +int main(int argc, char **argv) +{ + int opt; + FILE *table = stdin; + char *rootdir = NULL; + char *line = NULL; + int linenum = 0; + int ret = EXIT_SUCCESS; + + bb_applet_name = basename(argv[0]); + + while ((opt = getopt(argc, argv, "d:")) != -1) { + switch(opt) { + case 'd': + table = bb_xfopen((line=optarg), "r"); + break; + default: + bb_show_usage(); + } + } + + if (optind >= argc || (rootdir=argv[optind])==NULL) { + bb_error_msg_and_die("root directory not speficied"); + } + + if (chdir(rootdir) != 0) { + bb_perror_msg_and_die("Couldnt chdir to %s", rootdir); + } + + umask(0); + + printf("rootdir=%s\n", rootdir); + if (line) { + printf("table='%s'\n", line); + } else { + printf("table=<stdin>\n"); + } + + while ((line = bb_get_chomped_line_from_file(table))) { + char type; + unsigned int mode = 0755; + unsigned int major = 0; + unsigned int minor = 0; + unsigned int count = 0; + unsigned int increment = 0; + unsigned int start = 0; + char name[41]; + char user[41]; + char group[41]; + char *full_name; + uid_t uid; + gid_t gid; + + linenum++; + + if ((2 > sscanf(line, "%40s %c %o %40s %40s %u %u %u %u %u", name, + &type, &mode, user, group, &major, + &minor, &start, &increment, &count)) || + ((major | minor | start | count | increment) > 255)) + { + if (*line=='\0' || *line=='#' || isspace(*line)) + continue; + bb_error_msg("line %d invalid: '%s'\n", linenum, line); + ret = EXIT_FAILURE; + continue; + } + if (name[0] == '#') { + continue; + } + if (*group) { + gid = get_ug_id(group, my_getgrnam); + } else { + gid = getgid(); + } + if (*user) { + uid = get_ug_id(user, my_getpwnam); + } else { + uid = getuid(); + } + full_name = concat_path_file(rootdir, name); + + if (type == 'd') { + bb_make_directory(full_name, mode | S_IFDIR, FILEUTILS_RECUR); + if (chown(full_name, uid, gid) == -1) { + bb_perror_msg("line %d: chown failed for %s", linenum, full_name); + ret = EXIT_FAILURE; + goto loop; + } + if ((mode != -1) && (chmod(full_name, mode) < 0)){ + bb_perror_msg("line %d: chmod failed for %s", linenum, full_name); + ret = EXIT_FAILURE; + goto loop; + } + } else if (type == 'f') { + struct stat st; + if ((stat(full_name, &st) < 0 || !S_ISREG(st.st_mode))) { + bb_perror_msg("line %d: regular file '%s' does not exist", linenum, full_name); + ret = EXIT_FAILURE; + goto loop; + } + if (chown(full_name, uid, gid) == -1) { + bb_perror_msg("line %d: chown failed for %s", linenum, full_name); + ret = EXIT_FAILURE; + goto loop; + } + if ((mode != -1) && (chmod(full_name, mode) < 0)){ + bb_perror_msg("line %d: chmod failed for %s", linenum, full_name); + ret = EXIT_FAILURE; + goto loop; + } + } else + { + dev_t rdev; + + if (type == 'p') { + mode |= S_IFIFO; + } + else if (type == 'c') { + mode |= S_IFCHR; + } + else if (type == 'b') { + mode |= S_IFBLK; + } else { + bb_error_msg("line %d: Unsupported file type %c", linenum, type); + ret = EXIT_FAILURE; + goto loop; + } + + if (count > 0) { + int i; + char *full_name_inc; + + full_name_inc = xmalloc(strlen(full_name) + 4); + for (i = start; i < count; i++) { + sprintf(full_name_inc, "%s%d", full_name, i); + rdev = makedev(major, minor + (i * increment - start)); + if (mknod(full_name_inc, mode, rdev) == -1) { + bb_perror_msg("line %d: Couldnt create node %s", linenum, full_name_inc); + ret = EXIT_FAILURE; + } + else if (chown(full_name_inc, uid, gid) == -1) { + bb_perror_msg("line %d: chown failed for %s", linenum, full_name_inc); + ret = EXIT_FAILURE; + } + if ((mode != -1) && (chmod(full_name_inc, mode) < 0)){ + bb_perror_msg("line %d: chmod failed for %s", linenum, full_name_inc); + ret = EXIT_FAILURE; + } + } + free(full_name_inc); + } else { + rdev = makedev(major, minor); + if (mknod(full_name, mode, rdev) == -1) { + bb_perror_msg("line %d: Couldnt create node %s", linenum, full_name); + ret = EXIT_FAILURE; + } + else if (chown(full_name, uid, gid) == -1) { + bb_perror_msg("line %d: chown failed for %s", linenum, full_name); + ret = EXIT_FAILURE; + } + if ((mode != -1) && (chmod(full_name, mode) < 0)){ + bb_perror_msg("line %d: chmod failed for %s", linenum, full_name); + ret = EXIT_FAILURE; + } + } + } +loop: + free(line); + free(full_name); + } + fclose(table); + + if (system("/bin/sync")) + bb_error_msg("sync failed, continuing anyway"); + + return 0; +} diff --git a/package/makedevs/makedevs.mk b/package/makedevs/makedevs.mk new file mode 100644 index 000000000..a3bb5cb54 --- /dev/null +++ b/package/makedevs/makedevs.mk @@ -0,0 +1,35 @@ +############################################################# +# +# makedevs +# +############################################################# + +MAKEDEVS_DIR=$(BUILD_DIR)/makedevs + +$(MAKEDEVS_DIR)/makedevs.c: + rm -rf $(MAKEDEVS_DIR) + mkdir $(MAKEDEVS_DIR) + cp package/makedevs/makedevs.c $(MAKEDEVS_DIR) + +$(MAKEDEVS_DIR)/makedevs: $(MAKEDEVS_DIR)/makedevs.c + $(CC) -Wall -Werror -O2 $(MAKEDEVS_DIR)/makedevs.c -o $@ + +$(TARGET_DIR)/usr/bin/makedevs: $(MAKEDEVS_DIR)/makedevs + $(INSTALL) -m 755 $^ $@ + +makedevs: $(TARGET_DIR)/usr/bin/makedevs + +HOST_MAKEDEVS_DIR=$(BUILD_DIR)/host-makedevs + +$(HOST_MAKEDEVS_DIR)/makedevs.c: + rm -rf $(HOST_MAKEDEVS_DIR) + mkdir $(HOST_MAKEDEVS_DIR) + cp package/makedevs/makedevs.c $(HOST_MAKEDEVS_DIR) + +$(HOST_MAKEDEVS_DIR)/makedevs: $(HOST_MAKEDEVS_DIR)/makedevs.c + $(CC) -Wall -Werror -O2 $(HOST_MAKEDEVS_DIR)/makedevs.c -o $@ + +$(HOST_DIR)/usr/bin/makedevs: $(HOST_MAKEDEVS_DIR)/makedevs + $(INSTALL) -m 755 $^ $@ + +host-makedevs: $(HOST_DIR)/usr/bin/makedevs
\ No newline at end of file |