#include "udev.h"
-int create_path(struct udev *udev, const char *path)
+int util_create_path(struct udev *udev, const char *path)
{
char p[UTIL_PATH_SIZE];
char *pos;
struct stat stats;
int ret;
- util_strlcpy(p, path, sizeof(p));
+ util_strscpy(p, sizeof(p), path);
pos = strrchr(p, '/');
if (pos == p || pos == NULL)
return 0;
if (stat(p, &stats) == 0 && (stats.st_mode & S_IFMT) == S_IFDIR)
return 0;
- if (create_path(udev, p) != 0)
+ if (util_create_path(udev, p) != 0)
return -1;
dbg(udev, "mkdir '%s'\n", p);
return -1;
}
-int delete_path(struct udev *udev, const char *path)
+int util_delete_path(struct udev *udev, const char *path)
{
char p[UTIL_PATH_SIZE];
char *pos;
/* Reset permissions on the device node, before unlinking it to make sure,
* that permisions of possible hard links will be removed too.
*/
-int unlink_secure(struct udev *udev, const char *filename)
+int util_unlink_secure(struct udev *udev, const char *filename)
{
int retval;
return retval;
}
-uid_t lookup_user(struct udev *udev, const char *user)
+uid_t util_lookup_user(struct udev *udev, const char *user)
{
+ char *endptr;
+ int buflen = sysconf(_SC_GETPW_R_SIZE_MAX);
+ char buf[buflen];
+ struct passwd pwbuf;
struct passwd *pw;
- uid_t uid = 0;
+ uid_t uid;
- errno = 0;
- pw = getpwnam(user);
- if (pw == NULL) {
- if (errno == 0 || errno == ENOENT || errno == ESRCH)
- err(udev, "specified user '%s' unknown\n", user);
- else
- err(udev, "error resolving user '%s': %m\n", user);
- } else
- uid = pw->pw_uid;
+ if (strcmp(user, "root") == 0)
+ return 0;
+ uid = strtoul(user, &endptr, 10);
+ if (endptr[0] == '\0')
+ return uid;
- return uid;
+ errno = 0;
+ getpwnam_r(user, &pwbuf, buf, buflen, &pw);
+ if (pw != NULL)
+ return pw->pw_uid;
+ if (errno == 0 || errno == ENOENT || errno == ESRCH)
+ err(udev, "specified user '%s' unknown\n", user);
+ else
+ err(udev, "error resolving user '%s': %m\n", user);
+ return 0;
}
-extern gid_t lookup_group(struct udev *udev, const char *group)
+gid_t util_lookup_group(struct udev *udev, const char *group)
{
+ char *endptr;
+ int buflen = sysconf(_SC_GETGR_R_SIZE_MAX);
+ char buf[buflen];
+ struct group grbuf;
struct group *gr;
gid_t gid = 0;
+ if (strcmp(group, "root") == 0)
+ return 0;
+ gid = strtoul(group, &endptr, 10);
+ if (endptr[0] == '\0')
+ return gid;
+
errno = 0;
- gr = getgrnam(group);
- if (gr == NULL) {
- if (errno == 0 || errno == ENOENT || errno == ESRCH)
- err(udev, "specified group '%s' unknown\n", group);
- else
- err(udev, "error resolving group '%s': %m\n", group);
- } else
- gid = gr->gr_gid;
+ getgrnam_r(group, &grbuf, buf, buflen, &gr);
+ if (gr != NULL)
+ return gr->gr_gid;
+ if (errno == 0 || errno == ENOENT || errno == ESRCH)
+ err(udev, "specified group '%s' unknown\n", group);
+ else
+ err(udev, "error resolving group '%s': %m\n", group);
+ return 0;
+}
+
+/* handle "[<SUBSYSTEM>/<KERNEL>]<attribute>" format */
+int util_resolve_subsys_kernel(struct udev *udev, const char *string,
+ char *result, size_t maxsize, int read_value)
+{
+ char temp[UTIL_PATH_SIZE];
+ char *subsys;
+ char *sysname;
+ struct udev_device *dev;
+ char *attr;
+
+ if (string[0] != '[')
+ return -1;
- return gid;
+ util_strscpy(temp, sizeof(temp), string);
+
+ subsys = &temp[1];
+
+ sysname = strchr(subsys, '/');
+ if (sysname == NULL)
+ return -1;
+ sysname[0] = '\0';
+ sysname = &sysname[1];
+
+ attr = strchr(sysname, ']');
+ if (attr == NULL)
+ return -1;
+ attr[0] = '\0';
+ attr = &attr[1];
+ if (attr[0] == '/')
+ attr = &attr[1];
+ if (attr[0] == '\0')
+ attr = NULL;
+
+ if (read_value && attr == NULL)
+ return -1;
+
+ dev = udev_device_new_from_subsystem_sysname(udev, subsys, sysname);
+ if (dev == NULL)
+ return -1;
+
+ if (read_value) {
+ const char *val;
+
+ val = udev_device_get_sysattr_value(dev, attr);
+ if (val != NULL)
+ util_strscpy(result, maxsize, val);
+ else
+ result[0] = '\0';
+ info(udev, "value '[%s/%s]%s' is '%s'\n", subsys, sysname, attr, result);
+ } else {
+ size_t l;
+ char *s;
+
+ s = result;
+ l = util_strpcpyl(&s, maxsize, udev_device_get_syspath(dev), NULL);
+ if (attr != NULL)
+ util_strpcpyl(&s, l, "/", attr, NULL);
+ info(udev, "path '[%s/%s]%s' is '%s'\n", subsys, sysname, attr, result);
+ }
+ udev_device_unref(dev);
+ return 0;
}
-int run_program(struct udev *udev, const char *command, char **envp,
- char *result, size_t ressize, size_t *reslen)
+int util_run_program(struct udev *udev, const char *command, char **envp,
+ char *result, size_t ressize, size_t *reslen)
{
int status;
int outpipe[2] = {-1, -1};
int err = 0;
/* build argv from command */
- util_strlcpy(arg, command, sizeof(arg));
+ util_strscpy(arg, sizeof(arg), command);
i = 0;
if (strchr(arg, ' ') != NULL) {
char *pos = arg;
}
/* allow programs in /lib/udev/ to be called without the path */
- if (strchr(argv[0], '/') == NULL) {
- util_strlcpy(program, UDEV_PREFIX "/lib/udev/", sizeof(program));
- util_strlcat(program, argv[0], sizeof(program));
+ if (argv[0][0] != '/') {
+ util_strscpyl(program, sizeof(program), UDEV_PREFIX "/lib/udev/", argv[0], NULL);
argv[0] = program;
}
if (WEXITSTATUS(status) != 0)
err = -1;
} else {
- err(udev, "'%s' abnormal exit\n", argv[0]);
+ err(udev, "'%s' abnormal exit\n", command);
err = -1;
}
}