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
|
/*
* Copyright (C) 2008 The Android Open Source Project
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* * Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* * Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in
* the documentation and/or other materials provided with the
* distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
* FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
* COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
* OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
* AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
* OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
* OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*/
#ifndef _UNISTD_H_
#define _UNISTD_H_
#include <stddef.h>
#include <sys/cdefs.h>
#include <sys/types.h>
#include <sys/select.h>
#include <sys/sysconf.h>
#include <linux/capability.h>
#include <pathconf.h>
__BEGIN_DECLS
/* Standard file descriptor numbers. */
#define STDIN_FILENO 0
#define STDOUT_FILENO 1
#define STDERR_FILENO 2
/* Values for whence in fseek and lseek */
#define SEEK_SET 0
#define SEEK_CUR 1
#define SEEK_END 2
extern char **environ;
extern __noreturn void _exit(int);
extern pid_t fork(void);
extern pid_t vfork(void);
extern pid_t getpid(void);
extern pid_t gettid(void);
extern pid_t getpgid(pid_t);
extern int setpgid(pid_t, pid_t);
extern pid_t getppid(void);
extern pid_t getpgrp(void);
extern int setpgrp(void);
extern pid_t setsid(void);
extern int execv(const char *, char * const *);
extern int execvp(const char *, char * const *);
extern int execve(const char *, char * const *, char * const *);
extern int execl(const char *, const char *, ...);
extern int execlp(const char *, const char *, ...);
extern int execle(const char *, const char *, ...);
extern int capget(cap_user_header_t hdrp, cap_user_data_t datap);
extern int capset(cap_user_header_t hdrp, const cap_user_data_t datap);
/* IMPORTANT: See comment under <sys/prctl.h> about this declaration */
extern int prctl(int option, ...);
extern int nice(int);
extern int setuid(uid_t);
extern uid_t getuid(void);
extern int seteuid(uid_t);
extern uid_t geteuid(void);
extern int setgid(gid_t);
extern gid_t getgid(void);
extern int setegid(gid_t);
extern gid_t getegid(void);
extern int getgroups(int, gid_t *);
extern int setgroups(size_t, const gid_t *);
extern int setreuid(uid_t, uid_t);
extern int setregid(gid_t, gid_t);
extern int setresuid(uid_t, uid_t, uid_t);
extern int setresgid(gid_t, gid_t, gid_t);
extern int getresuid(uid_t *ruid, uid_t *euid, uid_t *suid);
extern int getresgid(gid_t *rgid, gid_t *egid, gid_t *sgid);
extern int issetugid(void);
extern char* getlogin(void);
extern char* getusershell(void);
extern void setusershell(void);
extern void endusershell(void);
/* Macros for access() */
#define R_OK 4 /* Read */
#define W_OK 2 /* Write */
#define X_OK 1 /* Execute */
#define F_OK 0 /* Existence */
extern int access(const char *, int);
extern int link(const char *, const char *);
extern int unlink(const char *);
extern int chdir(const char *);
extern int fchdir(int);
extern int rmdir(const char *);
extern int pipe(int *);
#ifdef _GNU_SOURCE /* GLibc compatibility */
extern int pipe2(int *, int);
#endif
extern int chroot(const char *);
extern int symlink(const char *, const char *);
extern int readlink(const char *, char *, size_t);
extern int chown(const char *, uid_t, gid_t);
extern int fchown(int, uid_t, gid_t);
extern int lchown(const char *, uid_t, gid_t);
extern int truncate(const char *, off_t);
extern char *getcwd(char *, size_t);
extern int sync(void);
extern int close(int);
extern off_t lseek(int, off_t, int);
extern off64_t lseek64(int, off64_t, int);
extern ssize_t read(int, void *, size_t);
extern ssize_t write(int, const void *, size_t);
extern ssize_t pread(int, void *, size_t, off_t);
extern ssize_t pwrite(int, const void *, size_t, off_t);
extern int dup(int);
extern int dup2(int, int);
extern int fcntl(int, int, ...);
extern int ioctl(int, int, ...);
extern int flock(int, int);
extern int fsync(int);
extern int fdatasync(int);
extern int ftruncate(int, off_t);
extern int pause(void);
extern unsigned int alarm(unsigned int);
extern unsigned int sleep(unsigned int);
extern int usleep(unsigned long);
extern int gethostname(char *, size_t);
extern int getdtablesize(void);
extern void *__brk(void *);
extern int brk(void *);
extern void *sbrk(ptrdiff_t);
extern int getopt(int, char * const *, const char *);
extern char *optarg;
extern int optind, opterr, optopt;
extern int isatty(int);
extern char* ttyname(int);
extern int ttyname_r(int, char*, size_t);
extern int acct(const char* filepath);
static __inline__ int getpagesize(void) {
extern unsigned int __page_size;
return __page_size;
}
static __inline__ int __getpageshift(void) {
extern unsigned int __page_shift;
return __page_shift;
}
extern int sysconf(int name);
extern int daemon(int, int);
/* A special syscall that is only available on the ARM, not x86 function. */
extern int cacheflush(long start, long end, long flags);
extern pid_t tcgetpgrp(int fd);
extern int tcsetpgrp(int fd, pid_t _pid);
#if 0 /* MISSING FROM BIONIC */
extern pid_t getsid(pid_t);
extern int execvpe(const char *, char * const *, char * const *);
extern int execlpe(const char *, const char *, ...);
extern int getfsuid(uid_t);
extern int setfsuid(uid_t);
extern int getlogin_r(char* name, size_t namesize);
extern int sethostname(const char *, size_t);
extern int getdomainname(char *, size_t);
extern int setdomainname(const char *, size_t);
#endif /* MISSING */
/* Used to retry syscalls that can return EINTR. */
#define TEMP_FAILURE_RETRY(exp) ({ \
typeof (exp) _rc; \
do { \
_rc = (exp); \
} while (_rc == -1 && errno == EINTR); \
_rc; })
__END_DECLS
#endif /* _UNISTD_H_ */
|
