2 * Check decoding of sigaction syscall.
4 * Copyright (c) 2017 Dmitry V. Levin <ldv@altlinux.org>
7 * SPDX-License-Identifier: GPL-2.0-or-later
11 #include <asm/unistd.h>
24 unsigned long handler;
25 unsigned long mask[1];
27 unsigned long handler;
28 unsigned long mask[1];
31 unsigned long handler;
32 unsigned long mask[1];
34 unsigned long restorer;
42 typedef struct set_sa struct_set_sa;
48 unsigned long handler;
49 unsigned long mask[4];
52 typedef struct get_sa struct_get_sa;
56 typedef struct set_sa struct_get_sa;
61 k_sigaction(const kernel_ulong_t signum, const kernel_ulong_t new_act,
62 const kernel_ulong_t old_act)
64 return syscall(__NR_sigaction, signum, new_act, old_act);
67 #if defined SPARC || defined SPARC64
69 * See arch/sparc/kernel/sys_sparc_32.c:sys_sparc_sigaction
70 * and arch/sparc/kernel/sys_sparc32.c:compat_sys_sparc_sigaction
72 # define ADDR_INT ((unsigned int) -0xdefaced)
73 # define SIGNO_INT ((unsigned int) -SIGUSR1)
74 # define SIG_STR "-SIGUSR1"
76 # define ADDR_INT ((unsigned int) 0xdefaced)
77 # define SIGNO_INT ((unsigned int) SIGUSR1)
78 # define SIG_STR "SIGUSR1"
80 static const kernel_ulong_t signo =
81 (kernel_ulong_t) 0xbadc0ded00000000ULL | SIGNO_INT;
82 static const kernel_ulong_t addr =
83 (kernel_ulong_t) 0xfacefeed00000000ULL | ADDR_INT;
93 TAIL_ALLOC_OBJECT_CONST_PTR(struct_set_sa, new_act);
94 TAIL_ALLOC_OBJECT_CONST_PTR(struct_get_sa, old_act);
96 if (k_sigaction(signo, 0, 0))
97 perror_msg_and_skip("sigaction");
98 puts("sigaction(" SIG_STR ", NULL, NULL) = 0");
100 k_sigaction(signo, 0, 0);
101 puts("sigaction(" SIG_STR ", NULL, NULL) = 0");
103 k_sigaction(signo, (uintptr_t) (new_act + 1), 0);
104 printf("sigaction(" SIG_STR ", %p, NULL) = -1 EFAULT (%m)\n",
107 k_sigaction(signo, (uintptr_t) new_act + 2, 0);
108 printf("sigaction(" SIG_STR ", %#lx, NULL) = -1 EFAULT (%m)\n",
109 (unsigned long) new_act + 2);
111 k_sigaction(signo, 0, (uintptr_t) (old_act + 1));
112 printf("sigaction(" SIG_STR ", NULL, %p) = -1 EFAULT (%m)\n",
115 k_sigaction(signo, 0, (uintptr_t) old_act + 2);
116 printf("sigaction(" SIG_STR ", NULL, %#lx) = -1 EFAULT (%m)\n",
117 (unsigned long) old_act + 2);
119 k_sigaction(addr, 0, 0);
120 printf("sigaction(%d, NULL, NULL) = -1 EINVAL (%m)\n", ADDR_INT);
122 memset(new_act, 0, sizeof(*new_act));
124 k_sigaction(signo, (uintptr_t) new_act, 0);
125 puts("sigaction(" SIG_STR ", {sa_handler=SIG_DFL, sa_mask=[]"
126 ", sa_flags=0}, NULL) = 0");
128 sigemptyset(mask.libc);
129 sigaddset(mask.libc, SIGHUP);
130 sigaddset(mask.libc, SIGINT);
132 new_act->handler = (uintptr_t) SIG_IGN;
133 memcpy(new_act->mask, mask.old, sizeof(mask.old));
134 new_act->flags = SA_SIGINFO;
136 k_sigaction(signo, (uintptr_t) new_act, (uintptr_t) old_act);
137 puts("sigaction(" SIG_STR ", {sa_handler=SIG_IGN, sa_mask=[HUP INT]"
138 ", sa_flags=SA_SIGINFO}, {sa_handler=SIG_DFL, sa_mask=[]"
139 ", sa_flags=0}) = 0");
141 sigemptyset(mask.libc);
142 sigaddset(mask.libc, SIGQUIT);
143 sigaddset(mask.libc, SIGTERM);
145 new_act->handler = (unsigned long) addr;
146 memcpy(new_act->mask, mask.old, sizeof(mask.old));
147 new_act->flags = SA_ONSTACK | SA_RESTART;
149 k_sigaction(signo, (uintptr_t) new_act, (uintptr_t) old_act);
150 printf("sigaction(" SIG_STR ", {sa_handler=%#lx, sa_mask=[QUIT TERM]"
151 ", sa_flags=SA_ONSTACK|SA_RESTART}, {sa_handler=SIG_IGN"
152 ", sa_mask=[HUP INT], sa_flags=SA_SIGINFO}) = 0\n",
155 memset(mask.old, -1, sizeof(mask.old));
156 sigdelset(mask.libc, SIGHUP);
158 memcpy(new_act->mask, mask.old, sizeof(mask.old));
160 new_act->flags = SA_RESTORER;
161 new_act->restorer = (unsigned long) 0xdeadfacecafef00dULL;
162 # define SA_RESTORER_FMT ", sa_flags=SA_RESTORER, sa_restorer=%#lx"
163 # define SA_RESTORER_ARGS , new_act->restorer
165 new_act->flags = SA_NODEFER;
166 # define SA_RESTORER_FMT ", sa_flags=SA_NODEFER"
167 # define SA_RESTORER_ARGS
170 k_sigaction(signo, (uintptr_t) new_act, (uintptr_t) old_act);
171 printf("sigaction(" SIG_STR ", {sa_handler=%#lx, sa_mask=~[HUP]"
172 SA_RESTORER_FMT "}, {sa_handler=%#lx, sa_mask=[QUIT TERM]"
173 ", sa_flags=SA_ONSTACK|SA_RESTART}) = 0\n",
174 new_act->handler SA_RESTORER_ARGS,
177 puts("+++ exited with 0 +++");
183 SKIP_MAIN_UNDEFINED("__NR_sigaction")