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
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
|
/* SPDX-License-Identifier: LGPL-2.1-or-later */
/*
* Copyright (C) 2018 Red Hat, Inc.
*/
#ifndef __NM_IO_UTILS_H__
#define __NM_IO_UTILS_H__
#include "nm-macros-internal.h"
/*****************************************************************************/
int nm_io_fcntl_getfl(int fd);
int nm_io_fcntl_setfl(int fd, int flags);
int nm_io_fcntl_setfl_update(int fd, int flags_mask, int flags_value);
void nm_io_fcntl_setfl_update_nonblock(int fd);
/*****************************************************************************/
/**
* NMUtilsFileGetContentsFlags:
* @NM_UTILS_FILE_GET_CONTENTS_FLAG_NONE: no flag
* @NM_UTILS_FILE_GET_CONTENTS_FLAG_SECRET: if present, ensure that no
* data is left in memory. Essentially, it means to call nm_explicit_bzero()
* to not leave key material on the heap (when reading secrets).
*/
typedef enum {
NM_UTILS_FILE_GET_CONTENTS_FLAG_NONE = 0,
NM_UTILS_FILE_GET_CONTENTS_FLAG_SECRET = (1 << 0),
} NMUtilsFileGetContentsFlags;
gboolean nm_utils_fd_get_contents(int fd,
gboolean close_fd,
gsize max_length,
NMUtilsFileGetContentsFlags flags,
char **contents,
gsize *length,
int *out_errsv,
GError **error);
gboolean nm_utils_file_get_contents(int dirfd,
const char *filename,
gsize max_length,
NMUtilsFileGetContentsFlags flags,
char **contents,
gsize *length,
int *out_errsv,
GError **error);
gboolean nm_utils_file_set_contents(const char *filename,
const char *contents,
gssize length,
mode_t mode,
const struct timespec *times,
const char *tmp_name,
int *out_errsv,
GError **error);
struct _NMStrBuf;
gssize nm_utils_fd_read(int fd, struct _NMStrBuf *out_string);
gssize nm_fd_next_datagram_size(int fd);
struct stat;
int nm_utils_file_stat(const char *filename, struct stat *out_st);
/*****************************************************************************/
/* From systemd's ERRNO_IS_TRANSIENT().
*
* For send()/recv() or read()/write(). */
static inline gboolean
NM_ERRNO_IS_TRANSIENT(int r)
{
return NM_IN_SET((r < 0 ? -r : r), EAGAIN, EINTR);
}
/* From systemd's ERRNO_IS_DISCONNECT().
*
* Hint #1: ENETUNREACH happens if we try to connect to "non-existing" special IP addresses, such as ::5.
*
* Hint #2: The kernel sends e.g., EHOSTUNREACH or ENONET to userspace in some ICMP error cases. See the
* icmp_err_convert[] in net/ipv4/icmp.c in the kernel sources.
*
* Hint #3: When asynchronous connect() on TCP fails because the host never acknowledges a single packet,
* kernel tells us that with ETIMEDOUT, see tcp(7). */
static inline gboolean
NM_ERRNO_IS_DISCONNECT(int r)
{
return NM_IN_SET((r < 0 ? -r : r),
ECONNABORTED,
ECONNREFUSED,
ECONNRESET,
EHOSTDOWN,
EHOSTUNREACH,
ENETDOWN,
ENETRESET,
ENETUNREACH,
ENONET,
ENOPROTOOPT,
ENOTCONN,
EPIPE,
EPROTO,
ESHUTDOWN,
ETIMEDOUT);
}
/*****************************************************************************/
void nm_g_subprocess_terminate_in_background(GSubprocess *subprocess, int timeout_msec_before_kill);
char **nm_utils_find_mkstemp_files(const char *dirname, const char *filename);
static inline gboolean
nm_io_sockaddr_un_path_is_abstract(const char *path, const char **out_path)
{
if (path && path[0] == '@') {
NM_SET_OUT(out_path, &path[1]);
return TRUE;
}
NM_SET_OUT(out_path, path);
return FALSE;
}
struct sockaddr_un;
int nm_io_sockaddr_un_set(struct sockaddr_un *ret, NMOptionBool is_abstract, const char *path);
int nm_sd_notify(const char *state);
/*****************************************************************************/
int nm_parse_env_file_full(
const char *contents,
int (*push)(unsigned line, const char *key, const char *value, void *userdata),
void *userdata);
int nm_parse_env_filev(const char *contents, va_list ap);
int nm_parse_env_file_sentinel(const char *contents, ...) G_GNUC_NULL_TERMINATED;
#define nm_parse_env_file(contents, ...) nm_parse_env_file_sentinel((contents), __VA_ARGS__, NULL)
#endif /* __NM_IO_UTILS_H__ */
|
