diff options
Diffstat (limited to 'usr.bin/tail/tail.c')
| -rw-r--r-- | usr.bin/tail/tail.c | 12 |
1 files changed, 7 insertions, 5 deletions
diff --git a/usr.bin/tail/tail.c b/usr.bin/tail/tail.c index fc60a82287df..a92eee3881b4 100644 --- a/usr.bin/tail/tail.c +++ b/usr.bin/tail/tail.c @@ -95,15 +95,17 @@ main(int argc, char *argv[]) * -r is the entire file, not 10 lines. */ #define ARG(units, forward, backward) { \ + int64_t num; \ if (style) \ usage(); \ - if (expand_number(optarg, &off)) \ + if (expand_number(optarg, &num)) \ err(1, "illegal offset -- %s", optarg); \ - if (off > INT64_MAX / units || off < INT64_MIN / units ) \ + if (num > INT64_MAX / units || num < INT64_MIN / units) \ errx(1, "illegal offset -- %s", optarg); \ - switch(optarg[0]) { \ + off = num * units; \ + switch (optarg[0]) { \ case '+': \ - if (off) \ + if (off != 0) \ off -= (units); \ style = (forward); \ break; \ @@ -121,7 +123,7 @@ main(int argc, char *argv[]) off = 0; while ((ch = getopt_long(argc, argv, "+Fb:c:fn:qrv", long_opts, NULL)) != -1) - switch(ch) { + switch (ch) { case 'F': /* -F is superset of (and implies) -f */ Fflag = fflag = 1; break; |