diff options
Diffstat (limited to 'coreutils/tail.c')
| -rw-r--r-- | coreutils/tail.c | 22 |
1 files changed, 9 insertions, 13 deletions
diff --git a/coreutils/tail.c b/coreutils/tail.c index 340697f88..52aa8f69e 100644 --- a/coreutils/tail.c +++ b/coreutils/tail.c @@ -101,16 +101,12 @@ int tail_main(int argc, char **argv) #if ENABLE_INCLUDE_SUSv2 || ENABLE_FEATURE_FANCY_TAIL /* Allow legacy syntax of an initial numeric option without -n. */ - if (argc >= 2 && (argv[1][0] == '+' || argv[1][0] == '-') + if (argv[1] && (argv[1][0] == '+' || argv[1][0] == '-') && isdigit(argv[1][1]) ) { - /* replacing arg[0] with "-n" can segfault, so... */ - argv[1] = xasprintf("-n%s", argv[1]); -#if 0 /* If we ever decide to make tail NOFORK */ - char *s = alloca(strlen(argv[1]) + 3); - sprintf(s, "-n%s", argv[1]); - argv[1] = s; -#endif + count = eat_num(&argv[1][1]); + argv++; + argc--; } #endif @@ -133,8 +129,7 @@ int tail_main(int argc, char **argv) /* open all the files */ fds = xmalloc(sizeof(int) * (argc + 1)); - nfiles = i = 0; - if (argc == 0) { + if (!argv[0]) { struct stat statbuf; if (!fstat(STDIN_FILENO, &statbuf) && S_ISFIFO(statbuf.st_mode)) { @@ -142,13 +137,14 @@ int tail_main(int argc, char **argv) } *argv = (char *) bb_msg_standard_input; } + nfiles = i = 0; do { - FILE* fil = fopen_or_warn_stdin(argv[i]); - if (!fil) { + int fd = open_or_warn_stdin(argv[i]); + if (fd < 0) { G.status = EXIT_FAILURE; continue; } - fds[nfiles] = fileno(fil); + fds[nfiles] = fd; argv[nfiles++] = argv[i]; } while (++i < argc); |