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1 | /* | |
2 | * ircd-ratbox: A slightly useful ircd. | |
3 | * unix.c: various unix type functions | |
4 | * | |
5 | * Copyright (C) 1990 Jarkko Oikarinen and University of Oulu, Co Center | |
6 | * Copyright (C) 2005 ircd-ratbox development team | |
7 | * Copyright (C) 2005 Aaron Sethman <androsyn@ratbox.org> | |
8 | * | |
9 | * This program is free software; you can redistribute it and/or modify | |
10 | * it under the terms of the GNU General Public License as published by | |
11 | * the Free Software Foundation; either version 2 of the License, or | |
12 | * (at your option) any later version. | |
13 | * | |
14 | * This program is distributed in the hope that it will be useful, | |
15 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
16 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
17 | * GNU General Public License for more details. | |
18 | * | |
19 | * You should have received a copy of the GNU General Public License | |
20 | * along with this program; if not, write to the Free Software | |
21 | * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 | |
22 | * USA | |
23 | * | |
24 | */ | |
25 | ||
26 | #include <librb_config.h> | |
27 | #include <rb_lib.h> | |
28 | #include <sys/wait.h> | |
29 | ||
30 | #ifdef HAVE_DLINFO | |
31 | # include <link.h> | |
32 | # include <dlfcn.h> | |
33 | #endif | |
34 | ||
35 | #ifdef __APPLE__ | |
36 | #include <mach-o/dyld.h> | |
37 | #include <crt_externs.h> | |
38 | #endif | |
39 | ||
40 | #if defined(__FreeBSD__) || defined(__DragonFly__) | |
41 | #include <sys/types.h> | |
42 | #include <sys/sysctl.h> | |
43 | #endif | |
44 | ||
45 | #include <spawn.h> | |
46 | ||
47 | #ifndef __APPLE__ | |
48 | extern char **environ; | |
49 | #endif | |
50 | pid_t | |
51 | rb_spawn_process(const char *path, const char **argv) | |
52 | { | |
53 | pid_t pid; | |
54 | const void *arghack = argv; | |
55 | char **myenviron; | |
56 | int error; | |
57 | posix_spawnattr_t spattr; | |
58 | posix_spawnattr_init(&spattr); | |
59 | #ifdef POSIX_SPAWN_USEVFORK | |
60 | posix_spawnattr_setflags(&spattr, POSIX_SPAWN_USEVFORK); | |
61 | #endif | |
62 | #ifdef __APPLE__ | |
63 | myenviron = *_NSGetEnviron(); /* apple needs to go fuck themselves for this */ | |
64 | #else | |
65 | myenviron = environ; | |
66 | #endif | |
67 | error = posix_spawn(&pid, path, NULL, &spattr, arghack, myenviron); | |
68 | posix_spawnattr_destroy(&spattr); | |
69 | if (error != 0) | |
70 | { | |
71 | errno = error; | |
72 | pid = -1; | |
73 | } | |
74 | return pid; | |
75 | } | |
76 | ||
77 | int | |
78 | rb_gettimeofday(struct timeval *tv, void *tz) | |
79 | { | |
80 | return (gettimeofday(tv, tz)); | |
81 | } | |
82 | ||
83 | void | |
84 | rb_sleep(unsigned int seconds, unsigned int useconds) | |
85 | { | |
86 | struct timespec tv; | |
87 | tv.tv_nsec = (useconds * 1000); | |
88 | tv.tv_sec = seconds; | |
89 | nanosleep(&tv, NULL); | |
90 | } | |
91 | ||
92 | /* this is to keep some linkers from bitching about exporting a non-existant symbol..bleh */ | |
93 | char * | |
94 | rb_strerror(int error) | |
95 | { | |
96 | return strerror(error); | |
97 | } | |
98 | ||
99 | int | |
100 | rb_kill(pid_t pid, int sig) | |
101 | { | |
102 | return kill(pid, sig); | |
103 | } | |
104 | ||
105 | int | |
106 | rb_setenv(const char *name, const char *value, int overwrite) | |
107 | { | |
108 | return setenv(name, value, overwrite); | |
109 | } | |
110 | ||
111 | pid_t | |
112 | rb_waitpid(pid_t pid, int *status, int options) | |
113 | { | |
114 | return waitpid(pid, status, options); | |
115 | } | |
116 | ||
117 | pid_t | |
118 | rb_getpid(void) | |
119 | { | |
120 | return getpid(); | |
121 | } | |
122 | ||
123 | const char * | |
124 | rb_path_to_self(void) | |
125 | { | |
126 | static char path_buf[4096]; | |
127 | #if defined(HAVE_GETEXECNAME) | |
128 | const char *s = getexecname(); | |
129 | if (s == NULL) | |
130 | return NULL; | |
131 | realpath(s, path_buf); | |
132 | return path_buf; | |
133 | #elif defined(__linux__) || (defined(__FreeBSD__) && !defined(KERN_PROC_PATHNAME)) | |
134 | if (readlink("/proc/self/exe", path_buf, sizeof(path_buf)) != -1) | |
135 | return path_buf; | |
136 | return NULL; | |
137 | #elif defined(__FreeBSD__) || defined(__DragonFly__) | |
138 | size_t path_len = sizeof(path_buf); | |
139 | int mib[4] = { CTL_KERN, KERN_PROC, KERN_PROC_PATHNAME, -1 }; | |
140 | if (sysctl(mib, 4, path_buf, &path_len, NULL, 0) == 0) | |
141 | return path_buf; | |
142 | return NULL; | |
143 | #elif defined(HAVE_DLINFO) | |
144 | struct link_map *map = NULL; | |
145 | dlinfo(RTLD_SELF, RTLD_DI_LINKMAP, &map); | |
146 | if (map == NULL) | |
147 | return NULL; | |
148 | realpath(map->l_name, path_buf); | |
149 | return path_buf; | |
150 | #elif defined(__APPLE__) | |
151 | char tmp_path[4096]; | |
152 | uint32_t pathlen = 4096; | |
153 | ||
154 | if (_NSGetExecutablePath(tmp_path, &pathlen) < 0) | |
155 | return NULL; | |
156 | ||
157 | realpath(tmp_path, path_buf); | |
158 | return path_buf; | |
159 | #else | |
160 | return NULL; | |
161 | #endif | |
162 | } |