1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
|
/* Low-level file-handling.
Copyright (C) 2012-2018 Free Software Foundation, Inc.
This file is part of GDB.
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
the Free Software Foundation; either version 3 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program. If not, see <http://www.gnu.org/licenses/>. */
#ifndef FILESTUFF_H
#define FILESTUFF_H
#include <dirent.h>
/* Note all the file descriptors which are open when this is called.
These file descriptors will not be closed by close_most_fds. */
extern void notice_open_fds (void);
/* Mark a file descriptor as inheritable across an exec. */
extern void mark_fd_no_cloexec (int fd);
/* Mark a file descriptor as no longer being inheritable across an
exec. This is only meaningful when FD was previously passed to
mark_fd_no_cloexec. */
extern void unmark_fd_no_cloexec (int fd);
/* Close all open file descriptors other than those marked by
'notice_open_fds', and stdin, stdout, and stderr. Errors that
occur while closing are ignored. */
extern void close_most_fds (void);
/* Like 'open', but ensures that the returned file descriptor has the
close-on-exec flag set. */
extern int gdb_open_cloexec (const char *filename, int flags,
/* mode_t */ unsigned long mode);
/* Convenience wrapper for the above, which takes the filename as an
std::string. */
static inline int
gdb_open_cloexec (const std::string &filename, int flags,
/* mode_t */ unsigned long mode)
{
return gdb_open_cloexec (filename.c_str (), flags, mode);
}
struct gdb_file_deleter
{
void operator() (FILE *file) const
{
fclose (file);
}
};
/* A unique pointer to a FILE. */
typedef std::unique_ptr<FILE, gdb_file_deleter> gdb_file_up;
/* Like 'fopen', but ensures that the returned file descriptor has the
close-on-exec flag set. */
extern gdb_file_up gdb_fopen_cloexec (const char *filename,
const char *opentype);
/* Convenience wrapper for the above, which takes the filename as an
std::string. */
static inline gdb_file_up
gdb_fopen_cloexec (const std::string &filename, const char *opentype)
{
return gdb_fopen_cloexec (filename.c_str (), opentype);
}
/* Like 'socketpair', but ensures that the returned file descriptors
have the close-on-exec flag set. */
extern int gdb_socketpair_cloexec (int domain, int style, int protocol,
int filedes[2]);
/* Like 'socket', but ensures that the returned file descriptor has
the close-on-exec flag set. */
extern int gdb_socket_cloexec (int domain, int style, int protocol);
/* Like 'pipe', but ensures that the returned file descriptors have
the close-on-exec flag set. */
extern int gdb_pipe_cloexec (int filedes[2]);
/* Return a new cleanup that closes FD. */
extern struct cleanup *make_cleanup_close (int fd);
struct gdb_dir_deleter
{
void operator() (DIR *dir) const
{
closedir (dir);
}
};
/* A unique pointer to a DIR. */
typedef std::unique_ptr<DIR, gdb_dir_deleter> gdb_dir_up;
#endif /* FILESTUFF_H */
|
