1997-08-22 00:57:35 +02:00
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/* Compare two open file descriptors to see if they refer to the same file.
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2019-01-01 13:31:55 +01:00
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Copyright (C) 1991-2019 Free Software Foundation, Inc.
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1997-08-22 00:57:35 +02:00
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This file is part of the libiberty library.
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Libiberty is free software; you can redistribute it and/or
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modify it under the terms of the GNU Library General Public
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License as published by the Free Software Foundation; either
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version 2 of the License, or (at your option) any later version.
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Libiberty is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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Library General Public License for more details.
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You should have received a copy of the GNU Library General Public
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License along with libiberty; see the file COPYING.LIB. If
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2005-05-10 17:33:18 +02:00
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not, write to the Free Software Foundation, Inc., 51 Franklin Street - Fifth Floor,
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Boston, MA 02110-1301, USA. */
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1997-08-22 00:57:35 +02:00
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/*
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Makefile.in (TEXIFILES): Add fnmatch.txh.
* Makefile.in (TEXIFILES): Add fnmatch.txh.
(maint-undoc): New.
maint-tool: Add "undoc" tool.
* alloca.c, argv.c, asprintf.c, choose-temp.c, concat.c,
fdmatch.c, ffs.c, getruntime.c, insque.c, lbasename.c,
make-temp-file.c, mkstemps.c, pexecute.c, random.c, spaces.c,
strerror.s, strsignal.c, strtol.c, vasprintf.c: Add or update
documentation.
* fnmatch.txh: New.
* functions.texi: Regenerate.
From-SVN: r46274
2001-10-16 04:50:13 +02:00
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@deftypefn Extension int fdmatch (int @var{fd1}, int @var{fd2})
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Check to see if two open file descriptors refer to the same file.
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This is useful, for example, when we have an open file descriptor for
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an unnamed file, and the name of a file that we believe to correspond
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to that fd. This can happen when we are exec'd with an already open
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file (@code{stdout} for example) or from the SVR4 @file{/proc} calls
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that return open file descriptors for mapped address spaces. All we
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have to do is open the file by name and check the two file descriptors
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for a match, which is done by comparing major and minor device numbers
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and inode numbers.
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@end deftypefn
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1997-08-22 00:57:35 +02:00
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BUGS
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(FIXME: does this work for networks?)
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It works for NFS, which assigns a device number to each mount.
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*/
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2005-04-16 02:40:08 +02:00
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#ifdef HAVE_CONFIG_H
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#include "config.h"
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#endif
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1997-08-22 00:57:35 +02:00
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#include "ansidecl.h"
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#include "libiberty.h"
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#include <sys/types.h>
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#include <sys/stat.h>
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md5.h: Remove definition and uses of __P.
include/
2005-03-27 Gabriel Dos Reis <gdr@integrable-solutions.net>
* md5.h: Remove definition and uses of __P.
* dyn-string.h: Remove uses of PARAMS.
* fibheap.h: Likewise.
* floatformat.h: Likewise.
* hashtab.h: Likewise.
libiberty/
2005-03-27 Gabriel Dos Reis <gdr@integrable-solutions.net>
Convert libiberty to use ISO C prototype style 4/n.
* hashtab.c (higher_prime_index, hash_pointer, eq_pointer,
htab_size, htab_elements, htab_mod_1, htab_mod, htab_mod_m2,
htab_create_alloc, htab_set_functions_ex, htab_create,
htab_try_create, htab_delete, htab_empty,
find_empty_slot_for_expand, htab_expand, htab_find_with_hash,
htab_find, htab_find_slot_with_hash, htab_find_slot,
htab_remove_elt, htab_remove_elt_with_hash, htab_clear_slot,
htab_traverse_noresize, htab_traverse, htab_collisions,
htab_hash_string, iterative_hash): Use ISO C prototype.
* hex.c (hex_init): Likewise.
* index.c (index): Likewise.
* insque.c (insque, remque): Likewise.
* lbasename.c (lbasename): Likewise.
* lrealpath.c (lrealpath): Likewise.
* make-relative-prefix.c (save_string, split_directories,
free_split_directories, make_relative_prefix): Likewise.
* make-temp-file.c (try, choose_tmpdir, make_temp_file): Likewise.
* md5.c (md5_init_ctx, md5_read_ctx, md5_finish_ctx, md5_stream,
md5_buffer, md5_process_bytes, md5_process_block): Likewise.
* memchr.c (memchr): Likewise.
* memcpy.c (memcpy): Likewise.
* memmove.c (memmove): Likewise.
* gettimeofday.c (gettimeofday): Likewise.
* getruntime.c (get_run_time): Likewise.
* getpwd.c (getpwd, getpwd): Likewise.
* getpagesize.c (getpagesize): Likewise.
* getopt1.c (getopt_long, getopt_long_only, main): Likewise.
* getopt.c (my_index, exchange, _getopt_initialize,
_getopt_internal, getopt, main): Likewise.
* getcwd.c (getcwd): Likewise.
* fnmatch.c (fnmatch): Likewise.
* floatformat.c (floatformat_always_valid,
floatformat_i387_ext_is_valid, get_field, floatformat_to_double,
put_field, floatformat_from_double, floatformat_is_valid,
ieee_test, main): Likewise.
* fibheap.c (fibheap_new, fibnode_new, fibheap_compare,
fibheap_comp_data, fibheap_insert, fibheap_min, fibheap_min_key,
fibheap_union, fibheap_extract_min, fibheap_replace_key_data,
fibheap_replace_key, fibheap_replace_data, fibheap_delete_node,
fibheap_delete, fibheap_empty, fibheap_extr_min_node,
fibheap_ins_root, fibheap_rem_root, fibheap_consolidate,
fibheap_link, fibheap_cut, fibheap_cascading_cut,
fibnode_insert_after, fibnode_remove): Likewise.
* ffs.c (ffs): Likewise.
* fdmatch.c (fdmatch): Likewise.
* dyn-string.c (dyn_string_init, dyn_string_new,
dyn_string_delete, dyn_string_release, dyn_string_resize,
dyn_string_clear, dyn_string_copy, dyn_string_copy_cstr,
dyn_string_prepend, dyn_string_prepend_cstr, dyn_string_insert,
dyn_string_insert_cstr, dyn_string_insert_char,
dyn_string_append, dyn_string_append_cstr,
dyn_string_append_char, dyn_string_substring, dyn_string_eq):
Likewise.
From-SVN: r97113
2005-03-27 17:31:13 +02:00
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int fdmatch (int fd1, int fd2)
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1997-08-22 00:57:35 +02:00
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{
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struct stat sbuf1;
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struct stat sbuf2;
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if ((fstat (fd1, &sbuf1) == 0) &&
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(fstat (fd2, &sbuf2) == 0) &&
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(sbuf1.st_dev == sbuf2.st_dev) &&
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(sbuf1.st_ino == sbuf2.st_ino))
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{
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return (1);
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}
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else
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{
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return (0);
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}
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}
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