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cal: Fix check for lseek errors

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Pali Rohár committed 2016-12-17 03:00:12 +01:00
1 parent b8fb95b2aa
commit bc0f663e92
1 file changed
+5 -2
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src/cal.c
+5 -2
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@@ -73,6 +73,8 @@ int cal_init_file(const char * file, struct cal ** cal_out) {
struct stat st; struct stat st;
#ifdef __linux__ #ifdef __linux__
mtd_info_t mtd_info; mtd_info_t mtd_info;
#else
off_t lsize = 0;
#endif #endif
if ( stat(file, &st) != 0 ) if ( stat(file, &st) != 0 )
@@ -90,11 +92,12 @@ int cal_init_file(const char * file, struct cal ** cal_out) {
if ( ioctl(fd, BLKGETSIZE64, &blksize) != 0 ) if ( ioctl(fd, BLKGETSIZE64, &blksize) != 0 )
goto err; goto err;
#else #else
blksize = lseek(fd, 0, SEEK_END); lsize = lseek(fd, 0, SEEK_END);
if ( blksize == (off_t)-1 ) if ( lsize == (off_t)-1 )
goto err; goto err;
if ( lseek(fd, 0, SEEK_SET) == (off_t)-1 ) if ( lseek(fd, 0, SEEK_SET) == (off_t)-1 )
goto err; goto err;
blksize = lsize;
#endif #endif
if ( blksize > SSIZE_MAX ) if ( blksize > SSIZE_MAX )
goto err; goto err;