2 * Check decoding of setgroups/setgroups32 syscalls.
4 * Copyright (c) 2016 Dmitry V. Levin <ldv@altlinux.org>
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8 * modification, are permitted provided that the following conditions
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30 #ifdef __NR_setgroups32
32 # define SYSCALL_NR __NR_setgroups32
33 # define SYSCALL_NAME "setgroups32"
34 # define GID_TYPE unsigned int
39 # include <asm/unistd.h>
41 # ifdef __NR_setgroups
43 # define SYSCALL_NR __NR_setgroups
44 # define SYSCALL_NAME "setgroups"
45 # if defined __NR_setgroups32 && __NR_setgroups != __NR_setgroups32
46 # define GID_TYPE unsigned short
48 # define GID_TYPE unsigned int
63 if (id == (GID_TYPE) -1U)
74 /* check how the first argument is decoded */
75 long rc = syscall(SYSCALL_NR, 0, 0);
76 printf("%s(0, NULL) = %s\n", SYSCALL_NAME, sprintrc(rc));
78 rc = syscall(SYSCALL_NR, (long) 0xffffffff00000000ULL, 0);
79 printf("%s(0, NULL) = %s\n", SYSCALL_NAME, sprintrc(rc));
81 rc = syscall(SYSCALL_NR, 1, 0);
82 printf("%s(1, NULL) = %s\n", SYSCALL_NAME, sprintrc(rc));
84 rc = syscall(SYSCALL_NR, (long) 0xffffffff00000001ULL, 0);
85 printf("%s(1, NULL) = %s\n", SYSCALL_NAME, sprintrc(rc));
87 rc = syscall(SYSCALL_NR, -1U, 0);
88 printf("%s(%d, NULL) = %s\n", SYSCALL_NAME, -1, sprintrc(rc));
90 rc = syscall(SYSCALL_NR, -1L, 0);
91 printf("%s(%d, NULL) = %s\n", SYSCALL_NAME, -1, sprintrc(rc));
93 /* check how the second argument is decoded */
94 const GID_TYPE *const g1 = tail_alloc(sizeof(*g1));
95 GID_TYPE *const g2 = tail_alloc(sizeof(*g2) * 2);
96 GID_TYPE *const g3 = tail_alloc(sizeof(*g3) * 3);
98 rc = syscall(SYSCALL_NR, 0, g1 + 1);
99 printf("%s(0, []) = %s\n", SYSCALL_NAME, sprintrc(rc));
101 rc = syscall(SYSCALL_NR, 1, g1);
102 errstr = sprintrc(rc);
103 printf("%s(1, [", SYSCALL_NAME);
105 printf("]) = %s\n", errstr);
107 rc = syscall(SYSCALL_NR, 1, g1 + 1);
108 printf("%s(1, %p) = %s\n", SYSCALL_NAME, g1 + 1, sprintrc(rc));
110 rc = syscall(SYSCALL_NR, 1, -1L);
111 printf("%s(1, %#lx) = %s\n", SYSCALL_NAME, -1L, sprintrc(rc));
113 rc = syscall(SYSCALL_NR, 2, g1);
114 errstr = sprintrc(rc);
115 printf("%s(2, [", SYSCALL_NAME);
117 printf(", %p]) = %s\n", g1 + 1, errstr);
121 rc = syscall(SYSCALL_NR, 2, g2);
122 errstr = sprintrc(rc);
123 printf("%s(2, [", SYSCALL_NAME);
127 printf("]) = %s\n", errstr);
129 rc = syscall(SYSCALL_NR, 3, g2);
130 errstr = sprintrc(rc);
131 printf("%s(3, [", SYSCALL_NAME);
135 printf(", %p]) = %s\n", g2 + 2, errstr);
139 rc = syscall(SYSCALL_NR, 3, g3);
140 errstr = sprintrc(rc);
141 printf("%s(3, [", SYSCALL_NAME);
145 printf(", ...]) = %s\n", errstr);
147 rc = syscall(SYSCALL_NR, 4, g3);
148 errstr = sprintrc(rc);
149 printf("%s(4, [", SYSCALL_NAME);
153 printf(", ...]) = %s\n", errstr);
155 rc = sysconf(_SC_NGROUPS_MAX);
156 const unsigned ngroups_max = rc;
158 if ((unsigned long) rc == ngroups_max && (int) ngroups_max > 0) {
159 rc = syscall(SYSCALL_NR, ngroups_max, g3);
160 errstr = sprintrc(rc);
161 printf("%s(%d, [", SYSCALL_NAME, ngroups_max);
165 printf(", ...]) = %s\n", errstr);
167 const unsigned long size =
168 (unsigned long) 0xffffffff00000000ULL | ngroups_max;
169 rc = syscall(SYSCALL_NR, size, g3);
170 errstr = sprintrc(rc);
171 printf("%s(%d, [", SYSCALL_NAME, ngroups_max);
175 printf(", ...]) = %s\n", errstr);
177 rc = syscall(SYSCALL_NR, ngroups_max + 1, g3);
178 printf("%s(%d, %p) = %s\n", SYSCALL_NAME,
179 ngroups_max + 1, g3, sprintrc(rc));
182 puts("+++ exited with 0 +++");
188 SKIP_MAIN_UNDEFINED("__NR_setgroups")