mir/criu
2
0
Fork 0
mirror of https://github.com/checkpoint-restore/criu synced 2025-09-02 15:25:21 +00:00
Code Issues Releases Wiki Activity

namespaces: handle errors of snprintf

Browse Source 
Signed-off-by: Andrei Vagin <avagin@gmail.com>
This commit is contained in:
Andrei Vagin
2021-01-20 23:48:31 -08:00
parent 76f9ccc708
commit 90f043dea7
1 changed files with 10 additions and 2 deletions
Download Patch File Download Diff File Expand all files Collapse all files

12
criu/namespaces.c
View File

@@ -1163,11 +1163,19 @@ static int write_id_map(pid_t pid, UidGidExtent **extents, int n, char *id_map)
* We can perform only a single write (that may contain multiple
* newline-delimited records) to a uid_map and a gid_map files.
*/
for (i = 0; i < n; i++)
off += snprintf(buf + off, sizeof(buf) - off,
for (i = 0; i < n; i++) {
int len;
len = snprintf(buf + off, sizeof(buf) - off,
"%u %u %u\n", extents[i]->first,
extents[i]->lower_first,
extents[i]->count);
if (len < 0) {
pr_perror("Unable to form the user/group mappings buffer");
return -1;
}
off += len;
}
fd = open_proc_rw(pid, "%s", id_map);
if (fd < 0)