emo/shadow
1
0
Fork 0
Code Issues Pull Requests Packages Releases Activity

Other cleanups and documentation.

Browse Source 
Do the checks, then build the filenames. Do not mix both.
This commit is contained in:
nekral-guest 2007-12-28 00:23:33 +00:00
parent 523392dc0b
commit 9a9a9c0414
1 changed files with 27 additions and 30 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

57
libmisc/copydir.c
View File

@ -109,7 +109,7 @@ static int selinux_file_context (const char *dst_name)
#endif
/*
* remove_link - delete a link from the link list
* remove_link - delete a link from the linked list
*/
static void remove_link (struct link_name *ln)
{
@ -218,38 +218,33 @@ int copy_tree (const char *src_root, const char *dst_root, uid_t uid, gid_t gid)
set_orig++;
}
while ((0 == err) && (ent = readdir (dir)) != NULL) {
/*
* Skip the "." and ".." entries
*/
if ((strcmp (ent->d_name, ".") != 0) &&
(strcmp (ent->d_name, "..") != 0)) {
/*
* Make sure the resulting source and destination
* filenames will fit in their buffers.
*/
if ( (strlen (src_root) + strlen (ent->d_name) + 2 >
sizeof src_name)
|| (strlen (dst_root) + strlen (ent->d_name) + 2 >
sizeof dst_name)) {
err = -1;
} else {
/*
* Build the filename for both the source and
* the destination files.
*/
snprintf (src_name, sizeof src_name, "%s/%s",
src_root, ent->d_name);
snprintf (dst_name, sizeof dst_name, "%s/%s",
dst_root, ent->d_name);
if (strcmp (ent->d_name, ".") == 0 ||
strcmp (ent->d_name, "..") == 0) {
continue;
err = copy_entry (src_name, dst_name, uid, gid);
}
}
/*
* Make the filename for both the source and the
* destination files.
*/
if (strlen (src_root) + strlen (ent->d_name) + 2 >
sizeof src_name) {
err = -1;
break;
}
snprintf (src_name, sizeof src_name, "%s/%s", src_root,
ent->d_name);
if (strlen (dst_root) + strlen (ent->d_name) + 2 >
sizeof dst_name) {
err = -1;
break;
}
snprintf (dst_name, sizeof dst_name, "%s/%s", dst_root,
ent->d_name);
err = copy_entry (src_name, dst_name, uid, gid);
}
closedir (dir);
@ -389,8 +384,8 @@ static int copy_symlink (const char *src, const char *dst,
#endif
if ( (symlink (oldlink, dst) != 0)
|| (lchown (dst,
uid == (uid_t) - 1 ? statp->st_uid : uid,
gid == (gid_t) - 1 ? statp->st_gid : gid) != 0)) {
(uid == (uid_t) - 1) ? statp->st_uid : uid,
(gid == (gid_t) - 1) ? statp->st_gid : gid) != 0)) {
return -1;
}
@ -417,6 +412,8 @@ static int copy_hardlink (const char *src, const char *dst,
return -1;
}
/* If the file could be unlinked, decrement the links counter,
* and delete the file if it was the last reference */
lp->ln_count--;
if (lp->ln_count <= 0) {
remove_link (lp);