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udev: never touch device nodes with symlink requests

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This commit is contained in:
Kay Sievers 2012-07-09 18:13:41 +02:00
parent 461b182232
commit 2be7287b0e
1 changed files with 2 additions and 15 deletions
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17
src/udev/udev-node.c
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@ -67,21 +67,8 @@ static int node_symlink(struct udev *udev, const char *node, const char *slink)
/* preserve link with correct target, do not replace node of other device */
if (lstat(slink, &stats) == 0) {
if (S_ISBLK(stats.st_mode) || S_ISCHR(stats.st_mode)) {
struct stat stats2;
log_debug("found existing node instead of symlink '%s'\n", slink);
if (lstat(node, &stats2) == 0) {
if ((stats.st_mode & S_IFMT) == (stats2.st_mode & S_IFMT) &&
stats.st_rdev == stats2.st_rdev && stats.st_ino != stats2.st_ino) {
log_debug("replace device node '%s' with symlink to our node '%s'\n",
slink, node);
} else {
log_error("device node '%s' already exists, "
"link to '%s' will not overwrite it\n",
slink, node);
goto exit;
}
}
log_error("conflicting device node '%s' found, link to '%s' will not be created\n", slink, node);
goto exit;
} else if (S_ISLNK(stats.st_mode)) {
char buf[UTIL_PATH_SIZE];
int len;