diff options
Diffstat (limited to 'libfstools/common.c')
| -rw-r--r-- | libfstools/common.c | 12 |
1 files changed, 9 insertions, 3 deletions
diff --git a/libfstools/common.c b/libfstools/common.c index 8dc1095..1b22d2c 100644 --- a/libfstools/common.c +++ b/libfstools/common.c @@ -59,13 +59,17 @@ int block_file_identify(FILE *f, uint64_t offset) uint32_t magic = 0; size_t n; - fseeko(f, offset, SEEK_SET); + if (fseeko(f, offset, SEEK_SET) < 0) + return -1; + n = fread(&magic, sizeof(magic), 1, f); if (magic == cpu_to_le32(0x88b1f)) { return FS_TARGZ; } - fseeko(f, offset + 0x400, SEEK_SET); + if (fseeko(f, offset + 0x400, SEEK_SET) < 0) + return -1; + n = fread(&magic, sizeof(magic), 1, f); if (n != 1) return -1; @@ -74,7 +78,9 @@ int block_file_identify(FILE *f, uint64_t offset) return FS_F2FS; magic = 0; - fseeko(f, offset + 0x438, SEEK_SET); + if (fseeko(f, offset + 0x438, SEEK_SET) < 0) + return -1; + n = fread(&magic, sizeof(magic), 1, f); if (n != 1) return -1; |