Mercurial > hg > octave-kai > gnulib-hg

annotate doc/posix-headers/fcntl.texi @ 13664:241057e2e60f

Find changesets by keywords (author, files, the commit message), revision number or hash, or revset expression.
fcntl-h: define O_CLOEXEC and O_EXEC if not defined; use new defines * doc/posix-headers/fcntl.texi (fcntl.h): Document that O_CLOEXEC is now defined to 0 if it is not defined, like other flags. Also, O_EXEC is now defined to be O_RDONLY if O_EXEC is not defined. Similarly for O_SEARCH; this last was already true, but not documented. * lib/fcntl.in.h (O_CLOEXEC): Define to 0 if not defined. * lib/dup-safer-flag.c (O_CLOEXEC): Remove now-useless #define. * lib/dup3.c, lib/pipe2.c, tests/test-dup-safer.c, tests/test-fcntl.c: Likewise. * lib/popen-safer.c (open_noinherit): Check whether O_CLOEXEC is zero, not whether it is defined. * tests/test-dup3.c, tests/test-pipe2.c (main): Likewise. * lib/progreloc.c (find_executable): Use O_EXEC rather than O_RDONLY. * lib/open.c (open): Check for O_SEARCH as well as for O_RDONLY.
author Paul Eggert <eggert@cs.ucla.edu>
date Fri, 10 Sep 2010 11:55:27 -0700
parents bb0ceefd22dc
children 3d497ee2707b
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
rev   line source
9638
070329237839 Rename two directories: headers -> posix-headers, functions -> posix-functions.
Bruno Haible <bruno@clisp.org>
parents:
diff changeset
1 @node fcntl.h
070329237839 Rename two directories: headers -> posix-headers, functions -> posix-functions.
Bruno Haible <bruno@clisp.org>
parents:
diff changeset
2 @section @file{fcntl.h}
070329237839 Rename two directories: headers -> posix-headers, functions -> posix-functions.
Bruno Haible <bruno@clisp.org>
parents:
diff changeset
3
13549
bb0ceefd22dc avoid some overlong lines from posix urls, etc.
Karl Berry <karl@freefriends.org>
parents: 12456
diff changeset
4 POSIX specification:@* @url{http://www.opengroup.org/susv3xbd/fcntl.h.html}
9638
070329237839 Rename two directories: headers -> posix-headers, functions -> posix-functions.
Bruno Haible <bruno@clisp.org>
parents:
diff changeset
5
11876
cc0527e5d2f4 fcntl-h: rename from fcntl, in preparation for fcntl(2)
Eric Blake <ebb9@byu.net>
parents: 9638
diff changeset
6 Gnulib module: fcntl-h
9638
070329237839 Rename two directories: headers -> posix-headers, functions -> posix-functions.
Bruno Haible <bruno@clisp.org>
parents:
diff changeset
7
070329237839 Rename two directories: headers -> posix-headers, functions -> posix-functions.
Bruno Haible <bruno@clisp.org>
parents:
diff changeset
8 Portability problems fixed by Gnulib:
070329237839 Rename two directories: headers -> posix-headers, functions -> posix-functions.
Bruno Haible <bruno@clisp.org>
parents:
diff changeset
9 @itemize
070329237839 Rename two directories: headers -> posix-headers, functions -> posix-functions.
Bruno Haible <bruno@clisp.org>
parents:
diff changeset
10 @item
13664
241057e2e60f fcntl-h: define O_CLOEXEC and O_EXEC if not defined; use new defines
Paul Eggert <eggert@cs.ucla.edu>
parents: 13549
diff changeset
11 @samp{O_CLOEXEC}, @samp{O_DIRECTORY}, @samp{O_DSYNC}, @samp{O_NOCTTY},
241057e2e60f fcntl-h: define O_CLOEXEC and O_EXEC if not defined; use new defines
Paul Eggert <eggert@cs.ucla.edu>
parents: 13549
diff changeset
12 @samp{O_NOFOLLOW}, @samp{O_NONBLOCK}, @samp{O_RSYNC}, @samp{O_SYNC},
241057e2e60f fcntl-h: define O_CLOEXEC and O_EXEC if not defined; use new defines
Paul Eggert <eggert@cs.ucla.edu>
parents: 13549
diff changeset
13 and @samp{O_TTY_INIT} are not defined on some platforms. Gnulib defines
241057e2e60f fcntl-h: define O_CLOEXEC and O_EXEC if not defined; use new defines
Paul Eggert <eggert@cs.ucla.edu>
parents: 13549
diff changeset
14 these macros to 0.
241057e2e60f fcntl-h: define O_CLOEXEC and O_EXEC if not defined; use new defines
Paul Eggert <eggert@cs.ucla.edu>
parents: 13549
diff changeset
15
241057e2e60f fcntl-h: define O_CLOEXEC and O_EXEC if not defined; use new defines
Paul Eggert <eggert@cs.ucla.edu>
parents: 13549
diff changeset
16 @item
241057e2e60f fcntl-h: define O_CLOEXEC and O_EXEC if not defined; use new defines
Paul Eggert <eggert@cs.ucla.edu>
parents: 13549
diff changeset
17 @samp{O_EXEC} and @samp{O_SEARCH} are not defined on some platforms.
241057e2e60f fcntl-h: define O_CLOEXEC and O_EXEC if not defined; use new defines
Paul Eggert <eggert@cs.ucla.edu>
parents: 13549
diff changeset
18 Gnulib defines these macros to @samp{O_RDONLY}, which is typically 0.
9638
070329237839 Rename two directories: headers -> posix-headers, functions -> posix-functions.
Bruno Haible <bruno@clisp.org>
parents:
diff changeset
19
070329237839 Rename two directories: headers -> posix-headers, functions -> posix-functions.
Bruno Haible <bruno@clisp.org>
parents:
diff changeset
20 @item
070329237839 Rename two directories: headers -> posix-headers, functions -> posix-functions.
Bruno Haible <bruno@clisp.org>
parents:
diff changeset
21 @samp{O_BINARY}, @samp{O_TEXT} (not specified by POSIX, but essential for
070329237839 Rename two directories: headers -> posix-headers, functions -> posix-functions.
Bruno Haible <bruno@clisp.org>
parents:
diff changeset
22 portability to Woe32 platforms) are defined on some platforms but not on
070329237839 Rename two directories: headers -> posix-headers, functions -> posix-functions.
Bruno Haible <bruno@clisp.org>
parents:
diff changeset
23 others.
070329237839 Rename two directories: headers -> posix-headers, functions -> posix-functions.
Bruno Haible <bruno@clisp.org>
parents:
diff changeset
24
070329237839 Rename two directories: headers -> posix-headers, functions -> posix-functions.
Bruno Haible <bruno@clisp.org>
parents:
diff changeset
25 @item
11876
cc0527e5d2f4 fcntl-h: rename from fcntl, in preparation for fcntl(2)
Eric Blake <ebb9@byu.net>
parents: 9638
diff changeset
26 @samp{O_DIRECT}, @samp{O_NDELAY}, @samp{O_NOATIME},
cc0527e5d2f4 fcntl-h: rename from fcntl, in preparation for fcntl(2)
Eric Blake <ebb9@byu.net>
parents: 9638
diff changeset
27 and @samp{O_NOLINKS} (not specified by POSIX) are defined
9638
070329237839 Rename two directories: headers -> posix-headers, functions -> posix-functions.
Bruno Haible <bruno@clisp.org>
parents:
diff changeset
28 on some platforms but not on others.
11876
cc0527e5d2f4 fcntl-h: rename from fcntl, in preparation for fcntl(2)
Eric Blake <ebb9@byu.net>
parents: 9638
diff changeset
29
cc0527e5d2f4 fcntl-h: rename from fcntl, in preparation for fcntl(2)
Eric Blake <ebb9@byu.net>
parents: 9638
diff changeset
30 @item
12456
f3aceada3c52 fcntl: port portions of fcntl to mingw
Eric Blake <ebb9@byu.net>
parents: 12454
diff changeset
31 @samp{FD_CLOEXEC}, @samp{F_DUPFD}, and @samp{F_GETFD} are not defined
f3aceada3c52 fcntl: port portions of fcntl to mingw
Eric Blake <ebb9@byu.net>
parents: 12454
diff changeset
32 on some platforms:
11963
a23404c39980 Mention affected platforms.
Bruno Haible <bruno@clisp.org>
parents: 11945
diff changeset
33 mingw.
11942
d1047ae4b8d5 openat: declare in POSIX headers
Eric Blake <ebb9@byu.net>
parents: 11877
diff changeset
34
d1047ae4b8d5 openat: declare in POSIX headers
Eric Blake <ebb9@byu.net>
parents: 11877
diff changeset
35 @item
12454
f7624052e60d fcntl: support F_DUPFD_CLOEXEC on systems with fcntl
Eric Blake <ebb9@byu.net>
parents: 11968
diff changeset
36 @samp{F_DUPFD_CLOEXEC} is not defined on some platforms:
f7624052e60d fcntl: support F_DUPFD_CLOEXEC on systems with fcntl
Eric Blake <ebb9@byu.net>
parents: 11968
diff changeset
37 MacOS X 10.3, FreeBSD 6.0, NetBSD 3.0, OpenBSD 3.8, AIX 5.1, HP-UX 11,
f7624052e60d fcntl: support F_DUPFD_CLOEXEC on systems with fcntl
Eric Blake <ebb9@byu.net>
parents: 11968
diff changeset
38 IRIX 6.5, OSF/1 5.1, Solaris 10, Cygwin 1.7.1, mingw, Interix 3.5,
f7624052e60d fcntl: support F_DUPFD_CLOEXEC on systems with fcntl
Eric Blake <ebb9@byu.net>
parents: 11968
diff changeset
39 BeOS.
f7624052e60d fcntl: support F_DUPFD_CLOEXEC on systems with fcntl
Eric Blake <ebb9@byu.net>
parents: 11968
diff changeset
40
f7624052e60d fcntl: support F_DUPFD_CLOEXEC on systems with fcntl
Eric Blake <ebb9@byu.net>
parents: 11968
diff changeset
41 @item
11945
2cf208dc022b faccessat: new module
Eric Blake <ebb9@byu.net>
parents: 11942
diff changeset
42 @samp{AT_FDCWD}, @samp{AT_EACCESS}, @samp{AT_SYMLINK_NOFOLLOW},
2cf208dc022b faccessat: new module
Eric Blake <ebb9@byu.net>
parents: 11942
diff changeset
43 @samp{AT_SYMLINK_FOLLOW}, and @samp{AT_REMOVEDIR}
11963
a23404c39980 Mention affected platforms.
Bruno Haible <bruno@clisp.org>
parents: 11945
diff changeset
44 are not defined on many platforms:
11968
98e4db1661cc doc: fix comments in recent patches
Eric Blake <ebb9@byu.net>
parents: 11963
diff changeset
45 glibc 2.3.6, MacOS X 10.3, FreeBSD 6.0, NetBSD 3.0, OpenBSD 3.8, AIX
98e4db1661cc doc: fix comments in recent patches
Eric Blake <ebb9@byu.net>
parents: 11963
diff changeset
46 5.1, HP-UX 11, IRIX 6.5, OSF/1 5.1, Solaris 8, Cygwin 1.5.x, mingw, Interix 3.5, BeOS.
11963
a23404c39980 Mention affected platforms.
Bruno Haible <bruno@clisp.org>
parents: 11945
diff changeset
47
a23404c39980 Mention affected platforms.
Bruno Haible <bruno@clisp.org>
parents: 11945
diff changeset
48 @item
a23404c39980 Mention affected platforms.
Bruno Haible <bruno@clisp.org>
parents: 11945
diff changeset
49 @samp{AT_FDCWD} is defined with a value too large for an @code{int} on some
a23404c39980 Mention affected platforms.
Bruno Haible <bruno@clisp.org>
parents: 11945
diff changeset
50 platforms:
a23404c39980 Mention affected platforms.
Bruno Haible <bruno@clisp.org>
parents: 11945
diff changeset
51 Solaris 10.
9638
070329237839 Rename two directories: headers -> posix-headers, functions -> posix-functions.
Bruno Haible <bruno@clisp.org>
parents:
diff changeset
52 @end itemize
070329237839 Rename two directories: headers -> posix-headers, functions -> posix-functions.
Bruno Haible <bruno@clisp.org>
parents:
diff changeset
53
070329237839 Rename two directories: headers -> posix-headers, functions -> posix-functions.
Bruno Haible <bruno@clisp.org>
parents:
diff changeset
54 Portability problems not fixed by Gnulib:
070329237839 Rename two directories: headers -> posix-headers, functions -> posix-functions.
Bruno Haible <bruno@clisp.org>
parents:
diff changeset
55 @itemize
11876
cc0527e5d2f4 fcntl-h: rename from fcntl, in preparation for fcntl(2)
Eric Blake <ebb9@byu.net>
parents: 9638
diff changeset
56 @item
12454
f7624052e60d fcntl: support F_DUPFD_CLOEXEC on systems with fcntl
Eric Blake <ebb9@byu.net>
parents: 11968
diff changeset
57 @samp{F_SETFD}, @samp{F_GETFL}, @samp{F_SETFL}, @samp{F_GETLK},
f7624052e60d fcntl: support F_DUPFD_CLOEXEC on systems with fcntl
Eric Blake <ebb9@byu.net>
parents: 11968
diff changeset
58 @samp{F_SETLK}, @samp{F_SETLOKW}, @samp{F_GETOWN}, and @samp{F_SETOWN}
f7624052e60d fcntl: support F_DUPFD_CLOEXEC on systems with fcntl
Eric Blake <ebb9@byu.net>
parents: 11968
diff changeset
59 are not defined on some platforms:
f7624052e60d fcntl: support F_DUPFD_CLOEXEC on systems with fcntl
Eric Blake <ebb9@byu.net>
parents: 11968
diff changeset
60 mingw.
11876
cc0527e5d2f4 fcntl-h: rename from fcntl, in preparation for fcntl(2)
Eric Blake <ebb9@byu.net>
parents: 9638
diff changeset
61
cc0527e5d2f4 fcntl-h: rename from fcntl, in preparation for fcntl(2)
Eric Blake <ebb9@byu.net>
parents: 9638
diff changeset
62 @item
cc0527e5d2f4 fcntl-h: rename from fcntl, in preparation for fcntl(2)
Eric Blake <ebb9@byu.net>
parents: 9638
diff changeset
63 @samp{POSIX_FADV_DONTNEED}, @samp{POSIX_FADV_NOREUSE},
cc0527e5d2f4 fcntl-h: rename from fcntl, in preparation for fcntl(2)
Eric Blake <ebb9@byu.net>
parents: 9638
diff changeset
64 @samp{POSIX_FADV_NORMAL}, @samp{POSIX_FADV_RANDOM},
cc0527e5d2f4 fcntl-h: rename from fcntl, in preparation for fcntl(2)
Eric Blake <ebb9@byu.net>
parents: 9638
diff changeset
65 @samp{POSIX_FADV_SEQUENTIAL}, and @samp{POSIX_FADV_WILLNEED} are not
cc0527e5d2f4 fcntl-h: rename from fcntl, in preparation for fcntl(2)
Eric Blake <ebb9@byu.net>
parents: 9638
diff changeset
66 defined on some platforms.
9638
070329237839 Rename two directories: headers -> posix-headers, functions -> posix-functions.
Bruno Haible <bruno@clisp.org>
parents:
diff changeset
67 @end itemize