Add support of 4-character octal numbers in parse_mode().
Signed-off-by: Jan Safranek <[email protected]>
---
src/tools/tools-common.c | 42 +++++++++++++++++-------------------------
1 files changed, 17 insertions(+), 25 deletions(-)
diff --git a/src/tools/tools-common.c b/src/tools/tools-common.c
index 8a739ce..c763ad6 100644
--- a/src/tools/tools-common.c
+++ b/src/tools/tools-common.c
@@ -239,33 +239,25 @@ int cgroup_string_list_add_directory(struct
cgroup_string_list *list,
/* allowed mode strings are octal version: "755" */
int parse_mode(char *string, mode_t *pmode, const char *program_name)
{
- mode_t mode = 0;
- int pos = 0; /* position of the number iin string */
- int i;
- int j = 64;
-
- while (pos < 3) {
- if ('0' <= string[pos] && string[pos] < '8') {
- i = (int)string[pos] - (int)'0';
- /* parse the permission triple*/
- mode = mode + i*j;
- j = j / 8;
- } else {
- fprintf(stdout, "%s wrong mode format %s",
- program_name, string);
- return -1;
- }
- pos++;
- }
-
- /* the string have contains three characters */
- if (string[pos] != '\0') {
- fprintf(stdout, "%s wrong mode format %s",
- program_name, string);
- return -1;
- }
+ char *end;
+ long mode;
+ size_t len;
+
+ len = strlen(string);
+ if (len < 3 || len > 4)
+ goto err;
+
+ errno = 0;
+ mode = strtol(string, &end, 8);
+ if (errno != 0 || *end != '\0')
+ goto err;
*pmode = mode;
return 0;
+
+err:
+ *pmode = 0;
+ fprintf(stdout, "%s wrong mode format %s", program_name, string);
+ return -1;
}
int parse_uid_gid(char *string, uid_t *uid, gid_t *gid,
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