mirror of
https://github.com/systemd/systemd.git
synced 2024-12-23 21:35:11 +03:00
delete name_list, move common file functions
This commit is contained in:
Kay Sievers
parent
daa849db6f
commit
a390e6f764
@ -29,101 +29,6 @@
|
||||
|
||||
#include "udev.h"
|
||||
|
||||
int 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));
|
||||
pos = strrchr(p, '/');
|
||||
if (pos == p || pos == NULL)
|
||||
return 0;
|
||||
|
||||
while (pos[-1] == '/')
|
||||
pos--;
|
||||
pos[0] = '\0';
|
||||
|
||||
dbg(udev, "stat '%s'\n", p);
|
||||
if (stat(p, &stats) == 0 && (stats.st_mode & S_IFMT) == S_IFDIR)
|
||||
return 0;
|
||||
|
||||
if (create_path(udev, p) != 0)
|
||||
return -1;
|
||||
|
||||
dbg(udev, "mkdir '%s'\n", p);
|
||||
udev_selinux_setfscreatecon(udev, p, S_IFDIR|0755);
|
||||
ret = mkdir(p, 0755);
|
||||
udev_selinux_resetfscreatecon(udev);
|
||||
if (ret == 0)
|
||||
return 0;
|
||||
|
||||
if (errno == EEXIST)
|
||||
if (stat(p, &stats) == 0 && (stats.st_mode & S_IFMT) == S_IFDIR)
|
||||
return 0;
|
||||
return -1;
|
||||
}
|
||||
|
||||
int delete_path(struct udev *udev, const char *path)
|
||||
{
|
||||
char p[UTIL_PATH_SIZE];
|
||||
char *pos;
|
||||
int retval;
|
||||
|
||||
strcpy (p, path);
|
||||
pos = strrchr(p, '/');
|
||||
if (pos == p || pos == NULL)
|
||||
return 0;
|
||||
|
||||
while (1) {
|
||||
*pos = '\0';
|
||||
pos = strrchr(p, '/');
|
||||
|
||||
/* don't remove the last one */
|
||||
if ((pos == p) || (pos == NULL))
|
||||
break;
|
||||
|
||||
/* remove if empty */
|
||||
retval = rmdir(p);
|
||||
if (errno == ENOENT)
|
||||
retval = 0;
|
||||
if (retval) {
|
||||
if (errno == ENOTEMPTY)
|
||||
return 0;
|
||||
err(udev, "rmdir(%s) failed: %m\n", p);
|
||||
break;
|
||||
}
|
||||
dbg(udev, "removed '%s'\n", p);
|
||||
}
|
||||
return 0;
|
||||
}
|
||||
|
||||
/* 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 retval;
|
||||
|
||||
retval = chown(filename, 0, 0);
|
||||
if (retval)
|
||||
err(udev, "chown(%s, 0, 0) failed: %m\n", filename);
|
||||
|
||||
retval = chmod(filename, 0000);
|
||||
if (retval)
|
||||
err(udev, "chmod(%s, 0000) failed: %m\n", filename);
|
||||
|
||||
retval = unlink(filename);
|
||||
if (errno == ENOENT)
|
||||
retval = 0;
|
||||
|
||||
if (retval)
|
||||
err(udev, "unlink(%s) failed: %m\n", filename);
|
||||
|
||||
return retval;
|
||||
}
|
||||
|
||||
int file_map(const char *filename, char **buf, size_t *bufsize)
|
||||
{
|
||||
struct stat stats;
|
||||
|
||||
155
udev/udev-util.c
155
udev/udev-util.c
@ -23,105 +23,106 @@
|
||||
#include <fcntl.h>
|
||||
#include <errno.h>
|
||||
#include <ctype.h>
|
||||
#include <dirent.h>
|
||||
#include <syslog.h>
|
||||
#include <pwd.h>
|
||||
#include <grp.h>
|
||||
#include <sys/types.h>
|
||||
#include <sys/utsname.h>
|
||||
|
||||
#include "udev.h"
|
||||
|
||||
struct name_entry *name_list_add(struct udev *udev, struct list_head *name_list, const char *name, int sort)
|
||||
int create_path(struct udev *udev, const char *path)
|
||||
{
|
||||
struct name_entry *name_loop;
|
||||
struct name_entry *name_new;
|
||||
char p[UTIL_PATH_SIZE];
|
||||
char *pos;
|
||||
struct stat stats;
|
||||
int ret;
|
||||
|
||||
/* avoid duplicate entries */
|
||||
list_for_each_entry(name_loop, name_list, node) {
|
||||
if (strcmp(name_loop->name, name) == 0) {
|
||||
dbg(udev, "'%s' is already in the list\n", name);
|
||||
return name_loop;
|
||||
}
|
||||
}
|
||||
util_strlcpy(p, path, sizeof(p));
|
||||
pos = strrchr(p, '/');
|
||||
if (pos == p || pos == NULL)
|
||||
return 0;
|
||||
|
||||
if (sort)
|
||||
list_for_each_entry(name_loop, name_list, node) {
|
||||
if (strcmp(name_loop->name, name) > 0)
|
||||
break;
|
||||
}
|
||||
while (pos[-1] == '/')
|
||||
pos--;
|
||||
pos[0] = '\0';
|
||||
|
||||
name_new = malloc(sizeof(struct name_entry));
|
||||
if (name_new == NULL)
|
||||
return NULL;
|
||||
memset(name_new, 0x00, sizeof(struct name_entry));
|
||||
util_strlcpy(name_new->name, name, sizeof(name_new->name));
|
||||
dbg(udev, "adding '%s'\n", name_new->name);
|
||||
list_add_tail(&name_new->node, &name_loop->node);
|
||||
dbg(udev, "stat '%s'\n", p);
|
||||
if (stat(p, &stats) == 0 && (stats.st_mode & S_IFMT) == S_IFDIR)
|
||||
return 0;
|
||||
|
||||
return name_new;
|
||||
if (create_path(udev, p) != 0)
|
||||
return -1;
|
||||
|
||||
dbg(udev, "mkdir '%s'\n", p);
|
||||
udev_selinux_setfscreatecon(udev, p, S_IFDIR|0755);
|
||||
ret = mkdir(p, 0755);
|
||||
udev_selinux_resetfscreatecon(udev);
|
||||
if (ret == 0)
|
||||
return 0;
|
||||
|
||||
if (errno == EEXIST)
|
||||
if (stat(p, &stats) == 0 && (stats.st_mode & S_IFMT) == S_IFDIR)
|
||||
return 0;
|
||||
return -1;
|
||||
}
|
||||
|
||||
struct name_entry *name_list_key_add(struct udev *udev, struct list_head *name_list, const char *key, const char *value)
|
||||
int delete_path(struct udev *udev, const char *path)
|
||||
{
|
||||
struct name_entry *name_loop;
|
||||
struct name_entry *name_new;
|
||||
size_t keylen = strlen(key);
|
||||
char p[UTIL_PATH_SIZE];
|
||||
char *pos;
|
||||
int retval;
|
||||
|
||||
list_for_each_entry(name_loop, name_list, node) {
|
||||
if (strncmp(name_loop->name, key, keylen) != 0)
|
||||
continue;
|
||||
if (name_loop->name[keylen] != '=')
|
||||
continue;
|
||||
dbg(udev, "key already present '%s', replace it\n", name_loop->name);
|
||||
snprintf(name_loop->name, sizeof(name_loop->name), "%s=%s", key, value);
|
||||
name_loop->name[sizeof(name_loop->name)-1] = '\0';
|
||||
return name_loop;
|
||||
strcpy (p, path);
|
||||
pos = strrchr(p, '/');
|
||||
if (pos == p || pos == NULL)
|
||||
return 0;
|
||||
|
||||
while (1) {
|
||||
*pos = '\0';
|
||||
pos = strrchr(p, '/');
|
||||
|
||||
/* don't remove the last one */
|
||||
if ((pos == p) || (pos == NULL))
|
||||
break;
|
||||
|
||||
/* remove if empty */
|
||||
retval = rmdir(p);
|
||||
if (errno == ENOENT)
|
||||
retval = 0;
|
||||
if (retval) {
|
||||
if (errno == ENOTEMPTY)
|
||||
return 0;
|
||||
err(udev, "rmdir(%s) failed: %m\n", p);
|
||||
break;
|
||||
}
|
||||
dbg(udev, "removed '%s'\n", p);
|
||||
}
|
||||
|
||||
name_new = malloc(sizeof(struct name_entry));
|
||||
if (name_new == NULL)
|
||||
return NULL;
|
||||
memset(name_new, 0x00, sizeof(struct name_entry));
|
||||
snprintf(name_new->name, sizeof(name_new->name), "%s=%s", key, value);
|
||||
name_new->name[sizeof(name_new->name)-1] = '\0';
|
||||
dbg(udev, "adding '%s'\n", name_new->name);
|
||||
list_add_tail(&name_new->node, &name_loop->node);
|
||||
|
||||
return name_new;
|
||||
return 0;
|
||||
}
|
||||
|
||||
int name_list_key_remove(struct udev *udev, struct list_head *name_list, const char *key)
|
||||
/* 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)
|
||||
{
|
||||
struct name_entry *name_loop;
|
||||
struct name_entry *name_tmp;
|
||||
size_t keylen = strlen(key);
|
||||
int retval = 0;
|
||||
int retval;
|
||||
|
||||
retval = chown(filename, 0, 0);
|
||||
if (retval)
|
||||
err(udev, "chown(%s, 0, 0) failed: %m\n", filename);
|
||||
|
||||
retval = chmod(filename, 0000);
|
||||
if (retval)
|
||||
err(udev, "chmod(%s, 0000) failed: %m\n", filename);
|
||||
|
||||
retval = unlink(filename);
|
||||
if (errno == ENOENT)
|
||||
retval = 0;
|
||||
|
||||
if (retval)
|
||||
err(udev, "unlink(%s) failed: %m\n", filename);
|
||||
|
||||
list_for_each_entry_safe(name_loop, name_tmp, name_list, node) {
|
||||
if (strncmp(name_loop->name, key, keylen) != 0)
|
||||
continue;
|
||||
if (name_loop->name[keylen] != '=')
|
||||
continue;
|
||||
list_del(&name_loop->node);
|
||||
free(name_loop);
|
||||
retval = 1;
|
||||
break;
|
||||
}
|
||||
return retval;
|
||||
}
|
||||
|
||||
void name_list_cleanup(struct udev *udev, struct list_head *name_list)
|
||||
{
|
||||
struct name_entry *name_loop;
|
||||
struct name_entry *name_tmp;
|
||||
|
||||
list_for_each_entry_safe(name_loop, name_tmp, name_list, node) {
|
||||
list_del(&name_loop->node);
|
||||
free(name_loop);
|
||||
}
|
||||
}
|
||||
|
||||
uid_t lookup_user(struct udev *udev, const char *user)
|
||||
{
|
||||
struct passwd *pw;
|
||||
|
||||
15
udev/udev.h
15
udev/udev.h
@ -102,22 +102,13 @@ extern int udev_node_remove(struct udev_device *dev, int test);
|
||||
extern void udev_node_update_old_links(struct udev_device *dev, struct udev_device *dev_old, int test);
|
||||
|
||||
/* udev-util.c */
|
||||
struct name_entry {
|
||||
struct list_head node;
|
||||
char name[UTIL_PATH_SIZE];
|
||||
unsigned int ignore_error:1;
|
||||
};
|
||||
extern struct name_entry *name_list_add(struct udev *udev, struct list_head *name_list, const char *name, int sort);
|
||||
extern struct name_entry *name_list_key_add(struct udev *udev, struct list_head *name_list, const char *key, const char *value);
|
||||
extern int name_list_key_remove(struct udev *udev, struct list_head *name_list, const char *key);
|
||||
extern void name_list_cleanup(struct udev *udev, struct list_head *name_list);
|
||||
extern int create_path(struct udev *udev, const char *path);
|
||||
extern int delete_path(struct udev *udev, const char *path);
|
||||
extern int unlink_secure(struct udev *udev, const char *filename);
|
||||
extern uid_t lookup_user(struct udev *udev, const char *user);
|
||||
extern gid_t lookup_group(struct udev *udev, const char *group);
|
||||
|
||||
/* udev_utils_file.c */
|
||||
extern int create_path(struct udev *udev, const char *path);
|
||||
extern int delete_path(struct udev *udev, const char *path);
|
||||
extern int unlink_secure(struct udev *udev, const char *filename);
|
||||
extern int file_map(const char *filename, char **buf, size_t *bufsize);
|
||||
extern void file_unmap(void *buf, size_t bufsize);
|
||||
extern size_t buf_get_line(const char *buf, size_t buflen, size_t cur);
|
||||
|
||||
Loading…
Reference in New Issue
Block a user