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/*
* Copyright (c) 2015 Elvira Khabirova <lineprinter0@gmail.com>
* Copyright (c) 2015-2016 Dmitry V. Levin <ldv@altlinux.org>
* Copyright (c) 2015-2020 The strace developers.
* All rights reserved.
*
* SPDX-License-Identifier: GPL-2.0-or-later
*/
#include "tests.h"
#include <errno.h>
#include <stdio.h>
#include <stdlib.h>
#include <sys/shm.h>
#ifndef SHM_HUGE_SHIFT
# define SHM_HUGE_SHIFT 26
#endif
#ifndef SHM_HUGE_MASK
# define SHM_HUGE_MASK 0x3f
#endif
#ifndef SHM_STAT_ANY
# define SHM_STAT_ANY 15
#endif
#ifndef SHM_NORESERVE
# define SHM_NORESERVE 010000
#endif
#include "xlat.h"
#include "xlat/shm_resource_flags.h"
#if XLAT_RAW
# define str_ipc_flags "0x2ce1e00"
# define str_shm_huge "21<<26"
# define str_ipc_private "0"
# define str_ipc_rmid "0"
# define str_ipc_set "0x1"
# define str_ipc_stat "0x2"
# define str_ipc_info "0x3"
# define str_shm_stat "0xd"
# define str_shm_info "0xe"
# define str_shm_stat_any "0xf"
# define str_ipc_64 "0x100"
# define str_bogus_cmd "0xdefaced2"
#elif XLAT_VERBOSE
# define str_ipc_flags \
"0x2ce1e00 /\\* IPC_CREAT\\|IPC_EXCL\\|SHM_HUGETLB\\|SHM_NORESERVE" \
"\\|0x2ce0000 \\*/"
# define str_shm_huge "21<<26 /\\* SHM_HUGE_SHIFT \\*/"
# define str_ipc_private "0 /\\* IPC_PRIVATE \\*/"
# define str_ipc_rmid "0 /\\* IPC_RMID \\*/"
# define str_ipc_set "0x1 /\\* IPC_SET \\*/"
# define str_ipc_stat "0x2 /\\* IPC_STAT \\*/"
# define str_ipc_info "0x3 /\\* IPC_INFO \\*/"
# define str_shm_stat "0xd /\\* SHM_STAT \\*/"
# define str_shm_info "0xe /\\* SHM_INFO \\*/"
# define str_shm_stat_any "0xf /\\* SHM_STAT_ANY \\*/"
# define str_ipc_64 "0x100 /\\* IPC_64 \\*/"
# define str_bogus_cmd "0xdefaced2 /\\* SHM_\\?\\?\\? \\*/"
#else
# define str_ipc_flags \
"IPC_CREAT\\|IPC_EXCL\\|SHM_HUGETLB\\|SHM_NORESERVE\\|0x2ce0000"
# define str_shm_huge "21<<SHM_HUGE_SHIFT"
# define str_ipc_private "IPC_PRIVATE"
# define str_ipc_rmid "IPC_RMID"
# define str_ipc_set "IPC_SET"
# define str_ipc_stat "IPC_STAT"
# define str_ipc_info "IPC_INFO"
# define str_shm_stat "SHM_STAT"
# define str_shm_info "SHM_INFO"
# define str_shm_stat_any "SHM_STAT_ANY"
# define str_ipc_64 "IPC_64"
# define str_bogus_cmd "0xdefaced2 /\\* SHM_\\?\\?\\? \\*/"
#endif
#undef TEST_SHMCTL_BOGUS_ADDR
/*
* Starting with commit glibc-2.32~80, on every 32-bit architecture
* where 32-bit time_t support is enabled, glibc tries to retrieve
* the data provided in the third argument of shmctl call.
*/
#if GLIBC_PREREQ_GE(2, 32) && defined __TIMESIZE && __TIMESIZE != 64
# define TEST_SHMCTL_BOGUS_ADDR 0
#endif
#ifndef TEST_SHMCTL_BOGUS_ADDR
# define TEST_SHMCTL_BOGUS_ADDR 1
#endif
static int id = -1;
static void
cleanup(void)
{
shmctl(id, IPC_RMID, NULL);
printf("shmctl\\(%d, (%s\\|)?%s, NULL\\) = 0\n",
id, str_ipc_64, str_ipc_rmid);
id = -1;
}
static void
print_shmid_ds(const char *const str_ipc_cmd,
const struct shmid_ds *const ds,
const int rc)
{
if (rc < 0) {
printf("shmctl\\(%d, (%s\\|)?%s, %p\\) = %s\n",
id, str_ipc_64, str_ipc_cmd, ds, sprintrc_grep(rc));
return;
}
printf("shmctl\\(%d, (%s\\|)?%s, \\{shm_perm=\\{uid=%u, gid=%u"
", mode=%#o, key=%u, cuid=%u, cgid=%u\\}, shm_segsz=%u"
", shm_cpid=%d, shm_lpid=%d, shm_nattch=%u, shm_atime=%u"
", shm_dtime=%u, shm_ctime=%u\\}\\) = %d\n",
id,
str_ipc_64,
str_ipc_cmd,
(unsigned) ds->shm_perm.uid,
(unsigned) ds->shm_perm.gid,
(unsigned) ds->shm_perm.mode,
(unsigned) ds->shm_perm.__key,
(unsigned) ds->shm_perm.cuid,
(unsigned) ds->shm_perm.cgid,
(unsigned) ds->shm_segsz,
(int) ds->shm_cpid,
(int) ds->shm_lpid,
(unsigned) ds->shm_nattch,
(unsigned) ds->shm_atime,
(unsigned) ds->shm_dtime,
(unsigned) ds->shm_ctime,
rc);
}
static void
print_ipc_info(const char *const str_ipc_cmd,
const struct shminfo *const info,
const int rc)
{
if (rc < 0) {
printf("shmctl\\(%d, (%s\\|)?%s, %p\\) = %s\n",
id, str_ipc_64, str_ipc_cmd, info, sprintrc_grep(rc));
return;
}
printf("shmctl\\(%d, (%s\\|)?%s, \\{shmmax=%llu, shmmin=%llu"
", shmmni=%llu, shmseg=%llu, shmall=%llu\\}\\) = %d\n",
id,
str_ipc_64,
str_ipc_cmd,
(unsigned long long) info->shmmax,
(unsigned long long) info->shmmin,
(unsigned long long) info->shmmni,
(unsigned long long) info->shmseg,
(unsigned long long) info->shmall,
rc);
}
static void
print_shm_info(const char *const str_ipc_cmd,
const struct shm_info *const info,
const int rc)
{
if (rc < 0) {
printf("shmctl\\(%d, (%s\\|)?%s, %p\\) = %s\n",
id, str_ipc_64, str_ipc_cmd, info, sprintrc_grep(rc));
return;
}
printf("shmctl\\(%d, (%s\\|)?%s, \\{used_ids=%d, shm_tot=%llu"
", shm_rss=%llu, shm_swp=%llu, swap_attempts=%llu"
", swap_successes=%llu\\}\\) = %d\n",
id,
str_ipc_64,
str_ipc_cmd,
info->used_ids,
(unsigned long long) info->shm_tot,
(unsigned long long) info->shm_rss,
(unsigned long long) info->shm_swp,
(unsigned long long) info->swap_attempts,
(unsigned long long) info->swap_successes,
rc);
}
int
main(void)
{
static const key_t private_key =
(key_t) (0xffffffff00000000ULL | IPC_PRIVATE);
static const key_t bogus_key = (key_t) 0xeca86420fdb97531ULL;
static const int bogus_id = 0xdefaced1;
static const int bogus_cmd = 0xdefaced2;
#if TEST_SHMCTL_BOGUS_ADDR
static void * const bogus_addr = (void *) -1L;
#endif
static const size_t bogus_size =
/*
* musl sets size to SIZE_MAX if size argument is greater than
* PTRDIFF_MAX - musl/src/ipc/shmget.c
*/
#ifdef __GLIBC__
(size_t) 0xdec0ded1dec0ded2ULL;
#else
(size_t) 0x1e55c0de5dec0dedULL;
#endif
static const unsigned int bogus_ipc_shm_flags =
IPC_CREAT | IPC_EXCL | SHM_HUGETLB | SHM_NORESERVE;
static const unsigned int huge_mask = SHM_HUGE_MASK << SHM_HUGE_SHIFT;
static const unsigned int huge_flags = 21 << SHM_HUGE_SHIFT;
int bogus_flags;
int rc;
union {
struct shmid_ds ds;
struct shminfo ipc_info;
struct shm_info shm_info;
} buf;
rc = shmget(bogus_key, bogus_size, 0);
printf("shmget\\(%#llx, %zu, 000\\) = %s\n",
zero_extend_signed_to_ull(bogus_key), bogus_size,
sprintrc_grep(rc));
rc = shmget(bogus_key, bogus_size, huge_flags);
printf("shmget\\(%#llx, %zu, %s\\|%#03o\\) = %s\n",
zero_extend_signed_to_ull(bogus_key), bogus_size,
str_shm_huge, 0, sprintrc_grep(rc));
bogus_flags = 0xface1e55 & ~(bogus_ipc_shm_flags | huge_mask);
rc = shmget(bogus_key, bogus_size, bogus_flags);
printf("shmget\\(%#llx, %zu, %#x\\|%#03o\\) = %s\n",
zero_extend_signed_to_ull(bogus_key), bogus_size,
bogus_flags & ~0777,
bogus_flags & 0777, sprintrc_grep(rc));
bogus_flags |= bogus_ipc_shm_flags;
rc = shmget(bogus_key, bogus_size, bogus_flags);
printf("shmget\\(%#llx, %zu, %s\\|%#03o\\) = %s\n",
zero_extend_signed_to_ull(bogus_key), bogus_size,
str_ipc_flags,
bogus_flags & 0777, sprintrc_grep(rc));
bogus_flags |= huge_flags;
rc = shmget(bogus_key, bogus_size, bogus_flags);
printf("shmget\\(%#llx, %zu, %s\\|%s\\|%#03o\\) = %s\n",
zero_extend_signed_to_ull(bogus_key), bogus_size,
str_ipc_flags, str_shm_huge,
bogus_flags & 0777, sprintrc_grep(rc));
bogus_flags &= ~bogus_ipc_shm_flags;
rc = shmget(bogus_key, bogus_size, bogus_flags);
printf("shmget\\(%#llx, %zu, %#x\\|%s\\|%#03o\\) = %s\n",
zero_extend_signed_to_ull(bogus_key), bogus_size,
bogus_flags & ~(0777 | huge_mask),
str_shm_huge,
bogus_flags & 0777, sprintrc_grep(rc));
id = shmget(private_key, 1, 0600);
if (id < 0)
perror_msg_and_skip("shmget");
printf("shmget\\(%s, 1, 0600\\) = %d\n", str_ipc_private, id);
atexit(cleanup);
rc = shmctl(bogus_id, bogus_cmd, NULL);
printf("shmctl\\(%d, (%s\\|)?%s, NULL\\) = %s\n",
bogus_id, str_ipc_64, str_bogus_cmd, sprintrc_grep(rc));
#if TEST_SHMCTL_BOGUS_ADDR
rc = shmctl(bogus_id, IPC_STAT, bogus_addr);
printf("shmctl\\(%d, (%s\\|)?%s, %p\\) = %s\n",
bogus_id, str_ipc_64, str_ipc_stat, bogus_addr,
sprintrc_grep(rc));
#endif
rc = shmctl(id, IPC_STAT, &buf.ds);
if (rc < 0)
perror_msg_and_skip("shmctl IPC_STAT");
print_shmid_ds(str_ipc_stat, &buf.ds, rc);
if (shmctl(id, IPC_SET, &buf.ds))
perror_msg_and_skip("shmctl IPC_SET");
printf("shmctl\\(%d, (%s\\|)?%s, \\{shm_perm=\\{uid=%u, gid=%u"
", mode=%#o\\}\\}\\) = 0\n",
id, str_ipc_64, str_ipc_set,
(unsigned) buf.ds.shm_perm.uid,
(unsigned) buf.ds.shm_perm.gid,
(unsigned) buf.ds.shm_perm.mode);
rc = shmctl(id, IPC_INFO, &buf.ds);
print_ipc_info(str_ipc_info, &buf.ipc_info, rc);
rc = shmctl(id, SHM_INFO, &buf.ds);
print_shm_info(str_shm_info, &buf.shm_info, rc);
rc = shmctl(id, SHM_STAT, &buf.ds);
print_shmid_ds(str_shm_stat, &buf.ds, rc);
rc = shmctl(id, SHM_STAT_ANY, &buf.ds);
print_shmid_ds(str_shm_stat_any, &buf.ds, rc);
return 0;
}
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