diff options
| -rw-r--r-- | src/tail.c | 12 |
1 files changed, 9 insertions, 3 deletions
diff --git a/src/tail.c b/src/tail.c index f09fbd617..1fbb1cf65 100644 --- a/src/tail.c +++ b/src/tail.c @@ -1,5 +1,5 @@ /* tail -- output the last part of file(s) - Copyright (C) 1989, 90, 91, 1995-2004 Free Software Foundation, Inc. + Copyright (C) 1989, 90, 91, 1995-2005 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 @@ -79,9 +79,14 @@ enum Follow_mode Follow_descriptor = 2 }; +/* On Darwin 7.7, when reading from a command-line pipe, standard + input is of type S_ISSOCK. Everywhere else it's S_ISFIFO. */ +#define IS_PIPE_LIKE_FILE_TYPE(Mode) \ + (S_ISFIFO (Mode) || S_ISSOCK (Mode)) + /* The types of files for which tail works. */ #define IS_TAILABLE_FILE_TYPE(Mode) \ - (S_ISREG (Mode) || S_ISFIFO (Mode) || S_ISCHR (Mode)) + (S_ISREG (Mode) || IS_PIPE_LIKE_FILE_TYPE (Mode) || S_ISCHR (Mode)) static char const *const follow_mode_string[] = { @@ -1650,7 +1655,8 @@ main (int argc, char **argv) if (forever) { struct stat stats; - if (fstat (STDIN_FILENO, &stats) == 0 && S_ISFIFO (stats.st_mode)) + if (fstat (STDIN_FILENO, &stats) == 0 + && IS_PIPE_LIKE_FILE_TYPE (stats.st_mode)) forever = false; } } |