1 /*
2 * Copyright (c) 2017 Cyril Hrubis <chrubis@suse.cz>
3 *
4 * This program is free software: you can redistribute it and/or modify
5 * it under the terms of the GNU General Public License as published by
6 * the Free Software Foundation, either version 2 of the License, or
7 * (at your option) any later version.
8 *
9 * This program is distributed in the hope that it will be useful,
10 * but WITHOUT ANY WARRANTY; without even the implied warranty of
11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
12 * GNU General Public License for more details.
13 *
14 * You should have received a copy of the GNU General Public License
15 * along with this program. If not, see <http://www.gnu.org/licenses/>.
16 */
17
18 #define _GNU_SOURCE
19 #include <unistd.h>
20 #include <errno.h>
21 #include "config.h"
22 #ifdef HAVE_SYS_FANOTIFY_H
23 # include <sys/fanotify.h>
24 #endif
25 #define TST_NO_DEFAULT_MAIN
26 #include "tst_test.h"
27 #include "tst_safe_macros.h"
28 #include "lapi/personality.h"
29
safe_setpgid(const char * file,const int lineno,pid_t pid,pid_t pgid)30 int safe_setpgid(const char *file, const int lineno, pid_t pid, pid_t pgid)
31 {
32 int rval;
33
34 rval = setpgid(pid, pgid);
35 if (rval) {
36 tst_brk(TBROK | TERRNO,
37 "%s:%d: setpgid(%i, %i) failed",
38 file, lineno, pid, pgid);
39 }
40
41 return rval;
42 }
43
safe_getpgid(const char * file,const int lineno,pid_t pid)44 pid_t safe_getpgid(const char *file, const int lineno, pid_t pid)
45 {
46 pid_t pgid;
47
48 pgid = getpgid(pid);
49 if (pgid == -1) {
50 tst_brk(TBROK | TERRNO,
51 "%s:%d: getpgid(%i) failed", file, lineno, pid);
52 }
53
54 return pgid;
55 }
56
safe_fanotify_init(const char * file,const int lineno,unsigned int flags,unsigned int event_f_flags)57 int safe_fanotify_init(const char *file, const int lineno,
58 unsigned int flags, unsigned int event_f_flags)
59 {
60 int rval;
61
62 #ifdef HAVE_SYS_FANOTIFY_H
63 rval = fanotify_init(flags, event_f_flags);
64
65 if (rval == -1) {
66 if (errno == ENOSYS) {
67 tst_brk(TCONF,
68 "fanotify is not configured in this kernel.");
69 }
70 tst_brk(TBROK | TERRNO,
71 "%s:%d: fanotify_init() failed", file, lineno);
72 }
73 #else
74 tst_brk(TCONF, "Header <sys/fanotify.h> is not present");
75 #endif /* HAVE_SYS_FANOTIFY_H */
76
77 return rval;
78 }
79
safe_personality(const char * filename,unsigned int lineno,unsigned long persona)80 int safe_personality(const char *filename, unsigned int lineno,
81 unsigned long persona)
82 {
83 int prev_persona = personality(persona);
84
85 if (prev_persona < 0) {
86 tst_brk_(filename, lineno, TBROK | TERRNO,
87 "persona(%ld) failed", persona);
88 }
89
90 return prev_persona;
91 }
92
safe_setregid(const char * file,const int lineno,gid_t rgid,gid_t egid)93 int safe_setregid(const char *file, const int lineno,
94 gid_t rgid, gid_t egid)
95 {
96 int rval;
97
98 rval = setregid(rgid, egid);
99 if (rval == -1) {
100 tst_brk_(file, lineno, TBROK | TERRNO,
101 "setregid(%li, %li) failed",
102 (long)rgid, (long)egid);
103 }
104
105 return rval;
106 }
107
108
safe_setreuid(const char * file,const int lineno,uid_t ruid,uid_t euid)109 int safe_setreuid(const char *file, const int lineno,
110 uid_t ruid, uid_t euid)
111 {
112 int rval;
113
114 rval = setreuid(ruid, euid);
115 if (rval == -1) {
116 tst_brk_(file, lineno, TBROK | TERRNO,
117 "setreuid(%li, %li) failed",
118 (long)ruid, (long)euid);
119 }
120
121 return rval;
122 }
123
124
safe_sigaction(const char * file,const int lineno,int signum,const struct sigaction * act,struct sigaction * oldact)125 int safe_sigaction(const char *file, const int lineno,
126 int signum, const struct sigaction *act,
127 struct sigaction *oldact)
128 {
129 int rval;
130
131 rval = sigaction(signum, act, oldact);
132
133 if (rval == -1) {
134 tst_brk_(file, lineno, TBROK | TERRNO,
135 "sigaction(%s (%d), %p, %p) failed",
136 tst_strsig(signum), signum, act, oldact);
137 }
138
139 return rval;
140 }
141
safe_getgrnam(const char * file,const int lineno,const char * name)142 struct group *safe_getgrnam(const char *file, const int lineno,
143 const char *name)
144 {
145 struct group *rval;
146
147 errno = 0;
148 rval = getgrnam(name);
149 if (rval == NULL) {
150 tst_brk_(file, lineno, TBROK | TERRNO,
151 "getgrnam(%s) failed", name);
152 }
153
154 return rval;
155 }
156
safe_getgrnam_fallback(const char * file,const int lineno,const char * name,const char * fallback)157 struct group *safe_getgrnam_fallback(const char *file, const int lineno,
158 const char *name, const char *fallback)
159 {
160 struct group *rval;
161
162 errno = 0;
163 rval = getgrnam(name);
164 if (rval == NULL) {
165 tst_res_(file, lineno, TINFO,
166 "getgrnam(%s) failed - try fallback %s",
167 name, fallback);
168 rval = safe_getgrnam(file, lineno, fallback);
169 }
170
171 return rval;
172 }
173
safe_getgrgid(const char * file,const int lineno,gid_t gid)174 struct group *safe_getgrgid(const char *file, const int lineno, gid_t gid)
175 {
176 struct group *rval;
177
178 errno = 0;
179 rval = getgrgid(gid);
180 if (rval == NULL) {
181 tst_brk_(file, lineno, TBROK | TERRNO,
182 "getgrgid(%li) failed", (long)gid);
183 }
184
185 return rval;
186 }
187
safe_chroot(const char * file,const int lineno,const char * path)188 int safe_chroot(const char *file, const int lineno, const char *path)
189 {
190 int rval;
191
192 rval = chroot(path);
193 if (rval == -1) {
194 tst_brk_(file, lineno, TBROK | TERRNO,
195 "chroot(%s) failed", path);
196 }
197
198 return rval;
199 }
200