diff options
Diffstat (limited to 'src/dd.c')
| -rw-r--r-- | src/dd.c | 12 |
1 files changed, 7 insertions, 5 deletions
@@ -800,10 +800,11 @@ skip (int fdesc, char const *file, uintmax_t records, size_t blocksize, { off_t offset = records * blocksize; - /* Try lseek and if an error indicates it was an inappropriate - operation, fall back on using read. */ + /* Try lseek and if an error indicates it was an inappropriate operation -- + or if the the file offset is not representable as an off_t -- + fall back on using read. */ - if (offset / blocksize != records + if ((uintmax_t) offset / blocksize != records || skip_via_lseek (file, fdesc, offset, SEEK_CUR) < 0) { while (records--) @@ -1190,11 +1191,12 @@ main (int argc, char **argv) { struct stat stdout_stat; off_t o = seek_records * output_blocksize; - if (o / output_blocksize != seek_records) + if ((uintmax_t) o / output_blocksize != seek_records) error (EXIT_FAILURE, 0, _("file offset out of range")); if (fstat (STDOUT_FILENO, &stdout_stat) != 0) - error (EXIT_FAILURE, errno, _("cannot fstat %s"), quote (output_file)); + error (EXIT_FAILURE, errno, _("cannot fstat %s"), + quote (output_file)); /* Complain only when ftruncate fails on a regular file, a directory, or a shared memory object, as the 2000-08 |