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minor cleanups

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This commit is contained in:
Eric Andersen 2005-06-24 09:10:06 +00:00
parent 93e6e0735a
commit 79e3250337
1 changed files with 54 additions and 45 deletions
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99
target/makedevs/makedevs.c
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@ -63,6 +63,7 @@ void bb_error_msg_and_die(const char *s, ...)
putc('\n', stderr); putc('\n', stderr);
exit(1); exit(1);
} }
void bb_vperror_msg(const char *s, va_list p) void bb_vperror_msg(const char *s, va_list p)
{ {
int err=errno; int err=errno;
@ -146,8 +147,8 @@ int bb_make_directory (char *path, long mode, int flags)
/* If we failed for any other reason than the directory /* If we failed for any other reason than the directory
* already exists, output a diagnostic and return -1.*/ * already exists, output a diagnostic and return -1.*/
if (errno != EEXIST if (errno != EEXIST
|| !(flags & FILEUTILS_RECUR) || !(flags & FILEUTILS_RECUR)
|| (stat(path, &st) < 0 || !S_ISDIR(st.st_mode))) { || (stat(path, &st) < 0 || !S_ISDIR(st.st_mode))) {
fail_msg = "create"; fail_msg = "create";
umask(mask); umask(mask);
break; break;
@ -321,62 +322,63 @@ char *concat_path_file(const char *path, const char *filename)
return outbuf; 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 main(int argc, char **argv)
{ {
int opt; int opt;
FILE *table = stdin; FILE *table = stdin;
char *rootdir = "./"; char *rootdir = NULL;
char *line; char *line = NULL;
int linenum = 0; int linenum = 0;
int ret = EXIT_SUCCESS; int ret = EXIT_SUCCESS;
bb_applet_name = basename(argv[0]); bb_applet_name = basename(argv[0]);
argc--;
argv++;
while ((opt = getopt(argc, argv, "d:")) != -1) { while ((opt = getopt(argc, argv, "d:")) != -1) {
switch(opt) { switch(opt) {
case 'd': case 'd':
table = bb_xfopen(optarg, "r"); table = bb_xfopen((line=optarg), "r");
break; break;
default: default:
fprintf(stderr, "%s: [-d device_table] rootdir\n\n", bb_applet_name); bb_show_usage();
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);
} }
} }
if (optind >= argc) { if (optind >= argc || (rootdir=argv[optind])==NULL) {
bb_error_msg_and_die("root directory not speficied"); bb_error_msg_and_die("root directory not speficied");
} }
rootdir = argv[optind];
if (chdir(rootdir) != 0) { if (chdir(rootdir) != 0) {
bb_perror_msg_and_die("Couldnt chdir to %s", rootdir); bb_perror_msg_and_die("Couldnt chdir to %s", rootdir);
@ -384,6 +386,13 @@ int main(int argc, char **argv)
umask(0); 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))) { while ((line = bb_get_chomped_line_from_file(table))) {
char type; char type;
unsigned int mode = 0755; unsigned int mode = 0755;
@ -402,9 +411,9 @@ int main(int argc, char **argv)
linenum++; linenum++;
if ((2 > sscanf(line, "%40s %c %o %40s %40s %u %u %u %u %u", name, if ((2 > sscanf(line, "%40s %c %o %40s %40s %u %u %u %u %u", name,
&type, &mode, user, group, &major, &type, &mode, user, group, &major,
&minor, &start, &increment, &count)) || &minor, &start, &increment, &count)) ||
((major | minor | start | count | increment) > 255)) ((major | minor | start | count | increment) > 255))
{ {
if (*line=='\0' || *line=='#' || isspace(*line)) if (*line=='\0' || *line=='#' || isspace(*line))
continue; continue;