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| author | Jim Meyering <jim@meyering.net> | 2000-03-04 14:31:29 +0000 |
|---|---|---|
| committer | Jim Meyering <jim@meyering.net> | 2000-03-04 14:31:29 +0000 |
| commit | 049ca98c745f88f384587cfa8c12392db2325193 (patch) | |
| tree | efc2ceb77958ba9f341b695e05387cd6cb6d037b /src/tail.c | |
| parent | 7b2d50e3af769a53fdc098ef0e6f87b81f3430ed (diff) | |
| download | coreutils-049ca98c745f88f384587cfa8c12392db2325193.tar.xz | |
Don't get failed assertion for `tail -f directory'.
Revert most of 1999-10-20 change. Instead, ...
(IS_TAILABLE_FILE_TYPE): Define to produce similar result.
(recheck): Use it here.
(tail_file): Use it here.
Diffstat (limited to 'src/tail.c')
| -rw-r--r-- | src/tail.c | 20 |
1 files changed, 19 insertions, 1 deletions
diff --git a/src/tail.c b/src/tail.c index a2a8979b1..aaf259314 100644 --- a/src/tail.c +++ b/src/tail.c @@ -1,5 +1,5 @@ /* tail -- output the last part of file(s) - Copyright (C) 89, 90, 91, 1995-1999 Free Software Foundation, Inc. + Copyright (C) 89, 90, 91, 1995-2000 Free Software Foundation, Inc. This program is free software; you can redistribute it and/or modify it under the terms of the GNU General Public License as published by @@ -84,6 +84,10 @@ enum Follow_mode Follow_descriptor = 2 }; +/* The types of files for which tail works. */ +#define IS_TAILABLE_FILE_TYPE(Mode) \ + (S_ISREG (Mode) || S_ISFIFO (Mode) || S_ISCHR (Mode)) + static char const *const follow_mode_string[] = { "descriptor", "name", 0 @@ -748,6 +752,13 @@ recheck (struct File_spec *f) error (0, errno, "%s", pretty_name (f)); } } + else if (!IS_TAILABLE_FILE_TYPE (new_stats.st_mode)) + { + fail = 1; + f->errnum = -1; + error (0, 0, _("`%s' has been replaced with an untailable file"), + pretty_name (f)); + } else { f->errnum = 0; @@ -1133,6 +1144,13 @@ tail_file (struct File_spec *f, off_t n_units) f->errnum = errno; error (0, errno, "%s", pretty_name (f)); } + else if (!IS_TAILABLE_FILE_TYPE (stats.st_mode)) + { + error (0, 0, _("%s: cannot follow end of this type of file"), + pretty_name (f)); + errors = 1; + f->errnum = -1; + } if (errors) { |