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Fixup device table based makedevs so it actually works

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This commit is contained in:
Eric Andersen 2005-07-18 09:28:36 +00:00
parent 10427ab528
commit e8614dbcd7
2 changed files with 72 additions and 35 deletions
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36
include/usage.h
View File

@ -1672,13 +1672,37 @@
#ifdef CONFIG_FEATURE_MAKEDEVS_TABLE
#define makedevs_trivial_usage \
"[-r rootdir] [device_table]"
"[-d device_table] rootdir"
#define makedevs_full_usage \
"Creates a batch of special files as specified in a device table\n" \
"The device table has one line per device group, each group is of\n" \
"the format\n" \
"\ttype mode user group major minor start increment count\n" \
"a '-' may be used for blank entries\n"
"Creates a range of special files as specified in a device table.\n" \
"Device table entries take the form of:\n" \
"type mode user group major minor start increment count\n\n" \
"<type> <mode> <uid> <gid> <major> <minor> <start> <inc> <count>\n" \
"Where name is the file name, type can be one of:\n" \
" f A regular file\n" \
" d Directory\n" \
" c Character special device file\n" \
" b Block special device file\n" \
" p Fifo (named pipe)\n" \
"uid is the user id for the target file, gid is the group id for the\n" \
"target file. The rest of the entries (major, minor, etc) apply to\n" \
"to device special files. A '-' may be used for blank entries.\n\n" \
#define makedevs_example_usage \
"For example:\n" \
"<name> <type> <mode><uid><gid><major><minor><start><inc><count>\n" \
"/dev d 755 0 0 - - - - -\n" \
"/dev/console c 666 0 0 5 1 - - -\n" \
"/dev/null c 666 0 0 1 3 0 0 -\n" \
"/dev/zero c 666 0 0 1 5 0 0 -\n" \
"/dev/hda b 640 0 0 3 0 0 0 -\n" \
"/dev/hda b 640 0 0 3 1 1 1 15\n\n" \
"Will Produce:\n" \
"/dev\n" \
"/dev/console\n" \
"/dev/null\n" \
"/dev/zero\n" \
"/dev/hda\n" \
"/dev/hda[0-15]"
#endif
#ifdef CONFIG_FEATURE_MD5_SHA1_SUM_CHECK

71
miscutils/makedevs.c
View File

@ -91,35 +91,42 @@ int makedevs_main(int argc, char **argv)
*
*/
static const struct option makedevs_long_options[] = {
{"root", 1, NULL, 'r'},
{0, 0, 0, 0}
};
extern int makedevs_main(int argc, char **argv)
{
FILE *table;
int opt;
char *rootdir = "./";
char *line;
FILE *table = stdin;
char *rootdir = NULL;
char *line = NULL;
int linenum = 0;
int ret = EXIT_SUCCESS;
bb_opt_complementaly = "d~r";
bb_applet_long_options = makedevs_long_options;
opt = bb_getopt_ulflags(argc, argv, "d:r:", &rootdir, &rootdir);
if (optind + 1 == argc) {
table = bb_xfopen(argv[optind], "r");
} else {
table = stdin;
while ((opt = getopt(argc, argv, "d:")) != -1) {
switch(opt) {
case 'd':
table = bb_xfopen((line=optarg), "r");
break;
default:
bb_show_usage();
}
}
if (chdir(rootdir) == -1) {
bb_perror_msg_and_die("Couldnt chdor to %s", rootdir);
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;
@ -135,11 +142,16 @@ extern int makedevs_main(int argc, char **argv)
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)) {
bb_error_msg("Ignoring invalid line\n%s\n", line);
&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;
}
@ -159,9 +171,9 @@ extern int makedevs_main(int argc, char **argv)
full_name = concat_path_file(rootdir, name);
if (type == 'd') {
bb_make_directory(full_name, mode | S_IFDIR, 0);
bb_make_directory(full_name, mode | S_IFDIR, FILEUTILS_RECUR);
if (chown(full_name, uid, gid) == -1) {
bb_perror_msg("chown failed for %s", full_name);
bb_perror_msg("line %d: chown failed for %s", linenum, full_name);
ret = EXIT_FAILURE;
goto loop;
}
@ -177,7 +189,7 @@ extern int makedevs_main(int argc, char **argv)
else if (type == 'b') {
mode |= S_IFBLK;
} else {
bb_error_msg("Unsupported file type %c", type);
bb_error_msg("line %d: Unsupported file type %c", linenum, type);
ret = EXIT_FAILURE;
goto loop;
}
@ -191,11 +203,11 @@ extern int makedevs_main(int argc, char **argv)
sprintf(full_name_inc, "%s%d", full_name, i);
rdev = (major << 8) + minor + (i * increment - start);
if (mknod(full_name_inc, mode, rdev) == -1) {
bb_perror_msg("Couldnt create node %s", full_name_inc);
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("chown failed for %s", full_name_inc);
bb_perror_msg("line %d: chown failed for %s", linenum, full_name_inc);
ret = EXIT_FAILURE;
}
}
@ -203,11 +215,11 @@ extern int makedevs_main(int argc, char **argv)
} else {
rdev = (major << 8) + minor;
if (mknod(full_name, mode, rdev) == -1) {
bb_perror_msg("Couldnt create node %s", full_name);
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("chown failed for %s", full_name);
bb_perror_msg("line %d: chown failed for %s", linenum, full_name);
ret = EXIT_FAILURE;
}
}
@ -220,6 +232,7 @@ loop:
return 0;
}
#else
# error makdedevs configuration error, either leaf or table must be selected
#endif