diff options
| -rw-r--r-- | src/rstsmack.c | 9 |
1 files changed, 8 insertions, 1 deletions
diff --git a/src/rstsmack.c b/src/rstsmack.c index 38d18d5..8ca51e1 100644 --- a/src/rstsmack.c +++ b/src/rstsmack.c @@ -75,6 +75,7 @@ static int parse_and_set(const char *srcfile) FILE *fp; int ret = 0; char linebuf[PATH_MAX + 5 * SMACK_LABEL_LEN], pathname[PATH_MAX]; + size_t linebuf_len; char label[SMACK_LABEL_LEN + 1]; char *plabel; /* pointer of beginning smack label */ fp = fopen(srcfile, "r"); @@ -89,7 +90,13 @@ static int parse_and_set(const char *srcfile) pathname[sizeof(pathname) - 1] = '\0'; plabel++; } else { - linebuf[strlen(linebuf) - 1] = '\0'; + linebuf_len = strlen(linebuf); + if (linebuf_len > 0 && linebuf_len <= sizeof(linebuf)) + linebuf[linebuf_len - 1] = '\0'; + else { + LOGINFO("Invalid label length (%u)\n", linebuf_len); + return -1; + } LOGINFO("no label, set label: %s, access=\"_\"(floor)\n", linebuf); strncpy(label, "_\"", SMACK_LABEL_LEN); set_label(linebuf, label, SMACK_LABEL_ACCESS); |