File: util.h

package info (click to toggle)
libvirt 0.8.3-5+squeeze5
  • links: PTS, VCS
  • area: main
  • in suites: squeeze
  • size: 77,288 kB
  • ctags: 30,516
  • sloc: ansic: 177,367; xml: 26,161; sh: 13,271; python: 4,929; makefile: 2,083; ml: 472; perl: 221; awk: 48; sed: 16
file content (280 lines) | stat: -rw-r--r-- 10,021 bytes parent folder | download
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
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280

/*
 * utils.h: common, generic utility functions
 *
 * Copyright (C) 2010 Red Hat, Inc.
 * Copyright (C) 2006, 2007 Binary Karma
 * Copyright (C) 2006 Shuveb Hussain
 *
 * This library is free software; you can redistribute it and/or
 * modify it under the terms of the GNU Lesser General Public
 * License as published by the Free Software Foundation; either
 * version 2.1 of the License, or (at your option) any later version.
 *
 * This library 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
 * Lesser General Public License for more details.
 *
 * You should have received a copy of the GNU Lesser General Public
 * License along with this library; if not, write to the Free Software
 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307  USA
 *
 * File created Jul 18, 2007 - Shuveb Hussain <shuveb@binarykarma.com>
 */

#ifndef __VIR_UTIL_H__
# define __VIR_UTIL_H__

# include "verify.h"
# include "internal.h"
# include <unistd.h>
# include <sys/select.h>
# include <sys/types.h>

# ifndef MIN
#  define MIN(a, b) ((a) < (b) ? (a) : (b))
# endif

int saferead(int fd, void *buf, size_t count) ATTRIBUTE_RETURN_CHECK;
ssize_t safewrite(int fd, const void *buf, size_t count)
    ATTRIBUTE_RETURN_CHECK;
int safezero(int fd, int flags, off_t offset, off_t len)
    ATTRIBUTE_RETURN_CHECK;

enum {
    VIR_EXEC_NONE   = 0,
    VIR_EXEC_NONBLOCK = (1 << 0),
    VIR_EXEC_DAEMON = (1 << 1),
    VIR_EXEC_CLEAR_CAPS = (1 << 2),
};

int virSetNonBlock(int fd) ATTRIBUTE_RETURN_CHECK;
int virSetCloseExec(int fd) ATTRIBUTE_RETURN_CHECK;

/* This will execute in the context of the first child
 * after fork() but before execve() */
typedef int (*virExecHook)(void *data);

int virExecDaemonize(const char *const*argv,
                     const char *const*envp,
                     const fd_set *keepfd,
                     pid_t *retpid,
                     int infd, int *outfd, int *errfd,
                     int flags,
                     virExecHook hook,
                     void *data,
                     char *pidfile) ATTRIBUTE_RETURN_CHECK;
int virExecWithHook(const char *const*argv,
                    const char *const*envp,
                    const fd_set *keepfd,
                    int *retpid,
                    int infd,
                    int *outfd,
                    int *errfd,
                    int flags,
                    virExecHook hook,
                    void *data,
                    char *pidfile) ATTRIBUTE_RETURN_CHECK;
int virExec(const char *const*argv,
            const char *const*envp,
            const fd_set *keepfd,
            pid_t *retpid,
            int infd,
            int *outfd,
            int *errfd,
            int flags) ATTRIBUTE_RETURN_CHECK;
int virRun(const char *const*argv, int *status) ATTRIBUTE_RETURN_CHECK;
int virRunWithHook(const char *const*argv,
                   virExecHook hook, void *data,
                   int *status) ATTRIBUTE_RETURN_CHECK;
int virPipeReadUntilEOF(int outfd, int errfd,
                        char **outbuf, char **errbuf);
int virFork(pid_t *pid);

int virSetUIDGID(uid_t uid, gid_t gid);

int virFileReadLimFD(int fd, int maxlen, char **buf) ATTRIBUTE_RETURN_CHECK;

int virFileReadAll(const char *path, int maxlen, char **buf) ATTRIBUTE_RETURN_CHECK;

int virFileWriteStr(const char *path, const char *str) ATTRIBUTE_RETURN_CHECK;

int virFileMatchesNameSuffix(const char *file,
                             const char *name,
                             const char *suffix);

int virFileHasSuffix(const char *str,
                     const char *suffix);

int virFileStripSuffix(char *str,
                       const char *suffix) ATTRIBUTE_RETURN_CHECK;

int virFileLinkPointsTo(const char *checkLink,
                        const char *checkDest);

int virFileResolveLink(const char *linkpath,
                       char **resultpath) ATTRIBUTE_RETURN_CHECK;

char *virFindFileInPath(const char *file);

int virFileExists(const char *path);

char *virFileSanitizePath(const char *path);

enum {
    VIR_FILE_OP_NONE        = 0,
    VIR_FILE_OP_AS_UID      = (1 << 0),
    VIR_FILE_OP_FORCE_PERMS = (1 << 1),
};
typedef int (*virFileOperationHook)(int fd, void *data);
int virFileOperation(const char *path, int openflags, mode_t mode,
                     uid_t uid, gid_t gid,
                     virFileOperationHook hook, void *hookdata,
                     unsigned int flags) ATTRIBUTE_RETURN_CHECK;

enum {
    VIR_DIR_CREATE_NONE        = 0,
    VIR_DIR_CREATE_AS_UID      = (1 << 0),
    VIR_DIR_CREATE_FORCE_PERMS = (1 << 1),
    VIR_DIR_CREATE_ALLOW_EXIST = (1 << 2),
};
int virDirCreate(const char *path, mode_t mode, uid_t uid, gid_t gid,
                 unsigned int flags) ATTRIBUTE_RETURN_CHECK;
int virFileMakePath(const char *path) ATTRIBUTE_RETURN_CHECK;

int virFileBuildPath(const char *dir,
                     const char *name,
                     const char *ext,
                     char *buf,
                     unsigned int buflen) ATTRIBUTE_RETURN_CHECK;

int virFileAbsPath(const char *path,
                   char **abspath) ATTRIBUTE_RETURN_CHECK;

int virFileOpenTty(int *ttymaster,
                   char **ttyName,
                   int rawmode);
int virFileOpenTtyAt(const char *ptmx,
                     int *ttymaster,
                     char **ttyName,
                     int rawmode);

char* virFilePid(const char *dir,
                 const char *name);
int virFileWritePidPath(const char *path,
                        pid_t pid) ATTRIBUTE_RETURN_CHECK;
int virFileWritePid(const char *dir,
                    const char *name,
                    pid_t pid) ATTRIBUTE_RETURN_CHECK;
int virFileReadPid(const char *dir,
                   const char *name,
                   pid_t *pid) ATTRIBUTE_RETURN_CHECK;
int virFileDeletePid(const char *dir,
                     const char *name);

char *virArgvToString(const char *const *argv);

int virStrToLong_i(char const *s,
                     char **end_ptr,
                     int base,
                     int *result);

int virStrToLong_ui(char const *s,
                    char **end_ptr,
                    int base,
                    unsigned int *result);
int virStrToLong_ll(char const *s,
                    char **end_ptr,
                    int base,
                    long long *result);
int virStrToLong_ull(char const *s,
                     char **end_ptr,
                     int base,
                     unsigned long long *result);
int virStrToDouble(char const *s,
                   char **end_ptr,
                   double *result);

int virMacAddrCompare (const char *mac1, const char *mac2);

void virSkipSpaces(const char **str);
int virParseNumber(const char **str);
int virParseVersionString(const char *str, unsigned long *version);
int virAsprintf(char **strp, const char *fmt, ...) ATTRIBUTE_FMT_PRINTF(2, 3);
char *virStrncpy(char *dest, const char *src, size_t n, size_t destbytes)
    ATTRIBUTE_RETURN_CHECK;
char *virStrcpy(char *dest, const char *src, size_t destbytes)
    ATTRIBUTE_RETURN_CHECK;
# define virStrcpyStatic(dest, src) virStrcpy((dest), (src), sizeof(dest))

# define VIR_MAC_BUFLEN 6
# define VIR_MAC_PREFIX_BUFLEN 3
# define VIR_MAC_STRING_BUFLEN VIR_MAC_BUFLEN * 3

int virParseMacAddr(const char* str,
                    unsigned char *addr) ATTRIBUTE_RETURN_CHECK;
void virFormatMacAddr(const unsigned char *addr,
                      char *str);
void virGenerateMacAddr(const unsigned char *prefix,
                        unsigned char *addr);

int virDiskNameToIndex(const char* str);
char *virIndexToDiskName(int idx, const char *prefix);

int virEnumFromString(const char *const*types,
                      unsigned int ntypes,
                      const char *type);

const char *virEnumToString(const char *const*types,
                            unsigned int ntypes,
                            int type);

# define VIR_ENUM_IMPL(name, lastVal, ...)                               \
    static const char *const name ## TypeList[] = { __VA_ARGS__ };      \
    extern int (* name ## Verify (void)) [verify_true (ARRAY_CARDINALITY(name ## TypeList) == lastVal)]; \
    const char *name ## TypeToString(int type) {                        \
        return virEnumToString(name ## TypeList,                        \
                               ARRAY_CARDINALITY(name ## TypeList),     \
                               type);                                   \
    }                                                                   \
    int name ## TypeFromString(const char *type) {                      \
        return virEnumFromString(name ## TypeList,                      \
                                 ARRAY_CARDINALITY(name ## TypeList),   \
                                 type);                                 \
    }

# define VIR_ENUM_DECL(name)                             \
    const char *name ## TypeToString(int type);         \
    int name ## TypeFromString(const char*type);

# ifndef HAVE_GETUID
static inline int getuid (void) { return 0; }
# endif

# ifndef HAVE_GETGID
static inline int getgid (void) { return 0; }
# endif

char *virGetHostname(virConnectPtr conn);

int virKillProcess(pid_t pid, int sig);

char *virGetUserDirectory(uid_t uid);
char *virGetUserName(uid_t uid);
int virGetUserID(const char *name,
                 uid_t *uid) ATTRIBUTE_RETURN_CHECK;
int virGetGroupID(const char *name,
                  gid_t *gid) ATTRIBUTE_RETURN_CHECK;

int virRandomInitialize(unsigned int seed) ATTRIBUTE_RETURN_CHECK;
int virRandom(int max);

char *virFileFindMountPoint(const char *type);

void virFileWaitForDevices(void);

# define virBuildPath(path, ...) virBuildPathInternal(path, __VA_ARGS__, NULL)
int virBuildPathInternal(char **path, ...) ATTRIBUTE_SENTINEL;

#endif /* __VIR_UTIL_H__ */