* Copyright 2005 Rob Landley <rob@landley.net>
* Copyright 2005 Frank Sorenson <frank@tuxrocks.com>
*
- * Licensed under GPLv2 or later, see file LICENSE in this tarball for details.
+ * Licensed under GPL version 2, see file LICENSE in this tarball for details.
*/
#include "busybox.h"
static void make_device(char *path, int delete)
{
char *device_name;
- int major, minor, type, len, fd;
+ int major, minor, type, len;
int mode = 0660;
uid_t uid = 0;
gid_t gid = 0;
if (!delete) {
strcat(path, "/dev");
- fd = open(path, O_RDONLY);
- len = read(fd, temp + 1, 64);
+ len = open_read_close(path, temp + 1, 64);
*temp++ = 0;
- close(fd);
if (len < 1) return;
}
if (ENABLE_FEATURE_MDEV_CONF) {
char *conf, *pos, *end;
+ int line, fd;
/* mmap the config file */
- if (-1 != (fd=open("/etc/mdev.conf",O_RDONLY))) {
- len = lseek(fd, 0, SEEK_END);
- conf = mmap(NULL, len, PROT_READ, MAP_PRIVATE, fd, 0);
- if (conf) {
- int line = 0;
-
- /* Loop through lines in mmaped file*/
- for (pos=conf; pos-conf<len;) {
- int field;
- char *end2;
-
- line++;
- /* find end of this line */
- for(end=pos; end-conf<len && *end!='\n'; end++)
+ fd = open("/etc/mdev.conf", O_RDONLY);
+ if (fd < 0)
+ goto end_parse;
+ len = xlseek(fd, 0, SEEK_END);
+ conf = mmap(NULL, len, PROT_READ, MAP_PRIVATE, fd, 0);
+ close(fd);
+ if (!conf)
+ goto end_parse;
+
+ line = 0;
+ /* Loop through lines in mmaped file*/
+ for (pos=conf; pos-conf<len;) {
+ int field;
+ char *end2;
+
+ line++;
+ /* find end of this line */
+ for (end=pos; end-conf<len && *end!='\n'; end++)
+ ;
+
+ /* Three fields: regex, uid:gid, mode */
+ for (field=0; field < (3 + ENABLE_FEATURE_MDEV_EXEC);
+ field++)
+ {
+ /* Skip whitespace */
+ while (pos<end && isspace(*pos)) pos++;
+ if (pos==end || *pos=='#') break;
+ for (end2=pos;
+ end2<end && !isspace(*end2) && *end2!='#'; end2++)
+ ;
+
+ if (field == 0) {
+ /* Regex to match this device */
+
+ char *regex = strndupa(pos, end2-pos);
+ regex_t match;
+ regmatch_t off;
+ int result;
+
+ /* Is this it? */
+ xregcomp(&match,regex, REG_EXTENDED);
+ result = regexec(&match, device_name, 1, &off, 0);
+ regfree(&match);
+
+ /* If not this device, skip rest of line */
+ if (result || off.rm_so
+ || off.rm_eo != strlen(device_name))
+ break;
+ }
+ if (field == 1) {
+ /* uid:gid */
+
+ char *s, *s2;
+
+ /* Find : */
+ for (s=pos; s<end2 && *s!=':'; s++)
;
+ if (s == end2) break;
+
+ /* Parse UID */
+ uid = strtoul(pos, &s2, 10);
+ if (s != s2) {
+ struct passwd *pass;
+ pass = getpwnam(strndupa(pos, s-pos));
+ if (!pass) break;
+ uid = pass->pw_uid;
+ }
+ s++;
+ /* parse GID */
+ gid = strtoul(s, &s2, 10);
+ if (end2 != s2) {
+ struct group *grp;
+ grp = getgrnam(strndupa(s, end2-s));
+ if (!grp) break;
+ gid = grp->gr_gid;
+ }
+ }
+ if (field == 2) {
+ /* mode */
- /* Three fields: regex, uid:gid, mode */
- for (field=0; field < (3 + ENABLE_FEATURE_MDEV_EXEC);
- field++)
- {
- /* Skip whitespace */
- while (pos<end && isspace(*pos)) pos++;
- if (pos==end || *pos=='#') break;
- for (end2=pos;
- end2<end && !isspace(*end2) && *end2!='#'; end2++)
- ;
-
- if (!field) {
- /* Regex to match this device */
-
- char *regex = strndupa(pos, end2-pos);
- regex_t match;
- regmatch_t off;
- int result;
-
- /* Is this it? */
- xregcomp(&match,regex, REG_EXTENDED);
- result = regexec(&match, device_name, 1, &off, 0);
- regfree(&match);
-
- /* If not this device, skip rest of line */
- if (result || off.rm_so
- || off.rm_eo != strlen(device_name))
- break;
-
- } else if (field == 1) {
- /* uid:gid */
-
- char *s, *s2;
-
- /* Find : */
- for(s=pos; s<end2 && *s!=':'; s++)
- ;
- if (s == end2) break;
-
- /* Parse UID */
- uid = strtoul(pos,&s2,10);
- if (s != s2) {
- struct passwd *pass;
- pass = getpwnam(strndupa(pos, s-pos));
- if (!pass) break;
- uid = pass->pw_uid;
- }
- s++;
- /* parse GID */
- gid = strtoul(s, &s2, 10);
- if (end2 != s2) {
- struct group *grp;
- grp = getgrnam(strndupa(s, end2-s));
- if (!grp) break;
- gid = grp->gr_gid;
- }
- } else if (field == 2) {
- /* mode */
-
- mode = strtoul(pos, &pos, 8);
- if (pos != end2) break;
- } else if (ENABLE_FEATURE_MDEV_EXEC && field == 3) {
- // Command to run
- char *s = "@$*", *s2;
- if (!(s2 = strchr(s, *pos++))) {
- // Force error
- field = 1;
- break;
- }
- if ((s2-s+1) & (1<<delete))
- command = xstrndup(pos, end-pos);
- }
-
- pos = end2;
+ mode = strtoul(pos, &pos, 8);
+ if (pos != end2) break;
+ }
+ if (ENABLE_FEATURE_MDEV_EXEC && field == 3) {
+ // Command to run
+ const char *s = "@$*";
+ const char *s2;
+ s2 = strchr(s, *pos++);
+ if (!s2) {
+ // Force error
+ field = 1;
+ break;
}
+ if ((s2-s+1) & (1<<delete))
+ command = xstrndup(pos, end-pos);
+ }
- /* Did everything parse happily? */
+ pos = end2;
+ }
- if (field > 2) break;
- if (field) bb_error_msg_and_die("Bad line %d",line);
+ /* Did everything parse happily? */
- /* Next line */
- pos = ++end;
- }
- munmap(conf, len);
- }
- close(fd);
+ if (field > 2) break;
+ if (field) bb_error_msg_and_die("bad line %d",line);
+
+ /* Next line */
+ pos = ++end;
}
+ munmap(conf, len);
+ end_parse: /* nothing */ ;
}
umask(0);
if (!delete) {
if (sscanf(temp, "%d:%d", &major, &minor) != 2) return;
if (mknod(device_name, mode | type, makedev(major, minor)) && errno != EEXIST)
- bb_perror_msg_and_die("mknod %s failed", device_name);
+ bb_perror_msg_and_die("mknod %s", device_name);
if (major == bbg.root_major && minor == bbg.root_minor)
symlink(device_name, "root");
-
+
if (ENABLE_FEATURE_MDEV_CONF) chown(device_name, uid, gid);
}
if (command) {
int rc;
char *s;
-
- s=xasprintf("MDEV=%s",device_name);
+
+ s = xasprintf("MDEV=%s", device_name);
putenv(s);
rc = system(command);
- s[4]=0;
+ s[4] = 0;
putenv(s);
free(s);
free(command);
- if (rc == -1) bb_perror_msg_and_die("Couldn't run %s", command);
+ if (rc == -1) bb_perror_msg_and_die("cannot run %s", command);
}
if (delete) unlink(device_name);
}
size_t len = strlen(path);
struct dirent *entry;
- if ((dir = opendir(path)) == NULL)
+ dir = opendir(path);
+ if (dir == NULL)
return;
while ((entry = readdir(dir)) != NULL) {
closedir(dir);
}
+int mdev_main(int argc, char *argv[]);
int mdev_main(int argc, char *argv[])
{
char *action;
if (argc == 2 && !strcmp(argv[1],"-s")) {
struct stat st;
- stat("/", &st); // If this fails, we have bigger problems.
- bbg.root_major=major(st.st_dev);
- bbg.root_minor=minor(st.st_dev);
+ xstat("/", &st);
+ bbg.root_major = major(st.st_dev);
+ bbg.root_minor = minor(st.st_dev);
strcpy(temp,"/sys/block");
find_dev(temp);
strcpy(temp,"/sys/class");
} else {
action = getenv("ACTION");
env_path = getenv("DEVPATH");
- if (!action || !env_path)
+ if (!action || !env_path)
bb_show_usage();
sprintf(temp, "/sys%s", env_path);
projects / oweals / busybox.git / blobdiff