1 /* Low-level file-handling.
2 Copyright (C) 2012-2017 Free Software Foundation, Inc.
4 This file is part of GDB.
6 This program is free software; you can redistribute it and/or modify
7 it under the terms of the GNU General Public License as published by
8 the Free Software Foundation; either version 3 of the License, or
9 (at your option) any later version.
11 This program is distributed in the hope that it will be useful,
12 but WITHOUT ANY WARRANTY; without even the implied warranty of
13 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 GNU General Public License for more details.
16 You should have received a copy of the GNU General Public License
17 along with this program. If not, see <http://www.gnu.org/licenses/>. */
22 /* Note all the file descriptors which are open when this is called.
23 These file descriptors will not be closed by close_most_fds. */
25 extern void notice_open_fds (void);
27 /* Mark a file descriptor as inheritable across an exec. */
29 extern void mark_fd_no_cloexec (int fd
);
31 /* Mark a file descriptor as no longer being inheritable across an
32 exec. This is only meaningful when FD was previously passed to
33 mark_fd_no_cloexec. */
35 extern void unmark_fd_no_cloexec (int fd
);
37 /* Close all open file descriptors other than those marked by
38 'notice_open_fds', and stdin, stdout, and stderr. Errors that
39 occur while closing are ignored. */
41 extern void close_most_fds (void);
43 /* Like 'open', but ensures that the returned file descriptor has the
44 close-on-exec flag set. */
46 extern int gdb_open_cloexec (const char *filename
, int flags
,
47 /* mode_t */ unsigned long mode
);
49 struct gdb_file_deleter
51 void operator() (FILE *file
) const
57 /* A unique pointer to a FILE. */
59 typedef std::unique_ptr
<FILE, gdb_file_deleter
> gdb_file_up
;
61 /* Like 'fopen', but ensures that the returned file descriptor has the
62 close-on-exec flag set. */
64 extern gdb_file_up
gdb_fopen_cloexec (const char *filename
,
65 const char *opentype
);
67 /* Like 'socketpair', but ensures that the returned file descriptors
68 have the close-on-exec flag set. */
70 extern int gdb_socketpair_cloexec (int domain
, int style
, int protocol
,
73 /* Like 'socket', but ensures that the returned file descriptor has
74 the close-on-exec flag set. */
76 extern int gdb_socket_cloexec (int domain
, int style
, int protocol
);
78 /* Like 'pipe', but ensures that the returned file descriptors have
79 the close-on-exec flag set. */
81 extern int gdb_pipe_cloexec (int filedes
[2]);
83 /* Return a new cleanup that closes FD. */
85 extern struct cleanup
*make_cleanup_close (int fd
);
87 #endif /* FILESTUFF_H */
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