diff options
Diffstat (limited to 'kexec/firmware_memmap.c')
| -rw-r--r-- | kexec/firmware_memmap.c | 13 |
1 files changed, 10 insertions, 3 deletions
diff --git a/kexec/firmware_memmap.c b/kexec/firmware_memmap.c index 5a101fb..5f82a10 100644 --- a/kexec/firmware_memmap.c +++ b/kexec/firmware_memmap.c @@ -58,7 +58,7 @@ static unsigned long long parse_numeric_sysfs(const char *filename) { FILE *fp; char linebuffer[BUFSIZ]; - unsigned long long retval; + unsigned long long retval = ULLONG_MAX; fp = fopen(filename, "r"); if (!fp) { @@ -67,12 +67,15 @@ static unsigned long long parse_numeric_sysfs(const char *filename) return ULLONG_MAX; } - fgets(linebuffer, BUFSIZ, fp); + if (!fgets(linebuffer, BUFSIZ, fp)) + goto err; + linebuffer[BUFSIZ-1] = 0; /* let strtoll() detect the base */ retval = strtoll(linebuffer, NULL, 0); +err: fclose(fp); return retval; @@ -100,7 +103,11 @@ static char *parse_string_sysfs(const char *filename) return NULL; } - fgets(linebuffer, BUFSIZ, fp); + if (!fgets(linebuffer, BUFSIZ, fp)) { + fclose(fp); + return NULL; + } + linebuffer[BUFSIZ-1] = 0; /* truncate trailing newline(s) */ |