diff options
Diffstat (limited to 'kexec/firmware_memmap.c')
| -rw-r--r-- | kexec/firmware_memmap.c | 22 |
1 files changed, 19 insertions, 3 deletions
diff --git a/kexec/firmware_memmap.c b/kexec/firmware_memmap.c index 1ee214aa..457c3dc9 100644 --- a/kexec/firmware_memmap.c +++ b/kexec/firmware_memmap.c @@ -125,11 +125,17 @@ static int parse_memmap_entry(const char *entry, struct memory_range *range) { char filename[PATH_MAX]; char *type; + int ret; /* * entry/start */ - snprintf(filename, PATH_MAX, "%s/%s", entry, "start"); + ret = snprintf(filename, PATH_MAX, "%s/%s", entry, "start"); + if (ret < 0 || ret >= PATH_MAX) { + fprintf(stderr, "snprintf failed: %s\n", strerror(errno)); + return -1; + } + filename[PATH_MAX-1] = 0; range->start = parse_numeric_sysfs(filename); @@ -139,7 +145,12 @@ static int parse_memmap_entry(const char *entry, struct memory_range *range) /* * entry/end */ - snprintf(filename, PATH_MAX, "%s/%s", entry, "end"); + ret = snprintf(filename, PATH_MAX, "%s/%s", entry, "end"); + if (ret < 0 || ret >= PATH_MAX) { + fprintf(stderr, "snprintf failed: %s\n", strerror(errno)); + return -1; + } + filename[PATH_MAX-1] = 0; range->end = parse_numeric_sysfs(filename); @@ -149,7 +160,12 @@ static int parse_memmap_entry(const char *entry, struct memory_range *range) /* * entry/type */ - snprintf(filename, PATH_MAX, "%s/%s", entry, "type"); + ret = snprintf(filename, PATH_MAX, "%s/%s", entry, "type"); + if (ret < 0 || ret >= PATH_MAX) { + fprintf(stderr, "snprintf failed: %s\n", strerror(errno)); + return -1; + } + filename[PATH_MAX-1] = 0; type = parse_string_sysfs(filename); |