@@ -15,3 +15,8 @@
* You should have received a copy of the GNU General Public License
* along with this program; if not, see <http://www.gnu.org/licenses/>.
*/
+
+#ifdef TARGET_NR_open
+SYSCALL_DEF(open, ARG_STR, ARG_OPENFLAG, ARG_MODEFLAG);
+#endif
+SYSCALL_DEF(openat, ARG_ATDIRFD, ARG_STR, ARG_OPENFLAG, ARG_MODEFLAG);
@@ -2228,41 +2228,6 @@ print_mq_open(const struct syscallname *name,
}
#endif
-#ifdef TARGET_NR_open
-static void
-print_open(const struct syscallname *name,
- abi_long arg0, abi_long arg1, abi_long arg2,
- abi_long arg3, abi_long arg4, abi_long arg5)
-{
- int is_creat = (arg1 & TARGET_O_CREAT);
-
- print_syscall_prologue(name);
- print_string(arg0, 0);
- print_open_flags(arg1, (is_creat == 0));
- if (is_creat)
- print_file_mode(arg2, 1);
- print_syscall_epilogue(name);
-}
-#endif
-
-#ifdef TARGET_NR_openat
-static void
-print_openat(const struct syscallname *name,
- abi_long arg0, abi_long arg1, abi_long arg2,
- abi_long arg3, abi_long arg4, abi_long arg5)
-{
- int is_creat = (arg2 & TARGET_O_CREAT);
-
- print_syscall_prologue(name);
- print_at_dirfd(arg0, 0);
- print_string(arg1, 0);
- print_open_flags(arg2, (is_creat == 0));
- if (is_creat)
- print_file_mode(arg3, 1);
- print_syscall_epilogue(name);
-}
-#endif
-
#ifdef TARGET_NR_mq_unlink
static void
print_mq_unlink(const struct syscallname *name,
new file mode 100644
@@ -0,0 +1,325 @@
+/*
+ * Linux file-related syscall implementations
+ * Copyright (c) 2003 Fabrice Bellard
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, see <http://www.gnu.org/licenses/>.
+ */
+
+/*
+ * Helpers for do_openat, manipulating /proc/self/foo.
+ */
+
+static int open_self_cmdline(void *cpu_env, int fd)
+{
+ CPUState *cpu = ENV_GET_CPU((CPUArchState *)cpu_env);
+ struct linux_binprm *bprm = ((TaskState *)cpu->opaque)->bprm;
+ int i;
+
+ for (i = 0; i < bprm->argc; i++) {
+ size_t len = strlen(bprm->argv[i]) + 1;
+
+ if (write(fd, bprm->argv[i], len) != len) {
+ return -1;
+ }
+ }
+
+ return 0;
+}
+
+static int open_self_maps(void *cpu_env, int fd)
+{
+ CPUState *cpu = ENV_GET_CPU((CPUArchState *)cpu_env);
+ TaskState *ts = cpu->opaque;
+ FILE *fp;
+ char *line = NULL;
+ size_t len = 0;
+ ssize_t read;
+
+ fp = fopen("/proc/self/maps", "r");
+ if (fp == NULL) {
+ return -1;
+ }
+
+ while ((read = getline(&line, &len, fp)) != -1) {
+ int fields, dev_maj, dev_min, inode;
+ uint64_t min, max, offset;
+ char flag_r, flag_w, flag_x, flag_p;
+ char path[512] = "";
+ fields = sscanf(line, "%"PRIx64"-%"PRIx64" %c%c%c%c %"PRIx64" %x:%x %d"
+ " %512s", &min, &max, &flag_r, &flag_w, &flag_x,
+ &flag_p, &offset, &dev_maj, &dev_min, &inode, path);
+
+ if ((fields < 10) || (fields > 11)) {
+ continue;
+ }
+ if (h2g_valid(min)) {
+ int flags = page_get_flags(h2g(min));
+ max = h2g_valid(max - 1) ? max : (uintptr_t)g2h(GUEST_ADDR_MAX) + 1;
+ if (page_check_range(h2g(min), max - min, flags) == -1) {
+ continue;
+ }
+ if (h2g(min) == ts->info->stack_limit) {
+ pstrcpy(path, sizeof(path), " [stack]");
+ }
+ dprintf(fd, TARGET_ABI_FMT_ptr "-" TARGET_ABI_FMT_ptr
+ " %c%c%c%c %08" PRIx64 " %02x:%02x %d %s%s\n",
+ h2g(min), h2g(max - 1) + 1, flag_r, flag_w,
+ flag_x, flag_p, offset, dev_maj, dev_min, inode,
+ path[0] ? " " : "", path);
+ }
+ }
+
+ free(line);
+ fclose(fp);
+
+ return 0;
+}
+
+static int open_self_stat(void *cpu_env, int fd)
+{
+ CPUState *cpu = ENV_GET_CPU((CPUArchState *)cpu_env);
+ TaskState *ts = cpu->opaque;
+ abi_ulong start_stack = ts->info->start_stack;
+ int i;
+
+ for (i = 0; i < 44; i++) {
+ char buf[128];
+ int len;
+ uint64_t val = 0;
+
+ if (i == 0) {
+ /* pid */
+ val = getpid();
+ snprintf(buf, sizeof(buf), "%"PRId64 " ", val);
+ } else if (i == 1) {
+ /* app name */
+ snprintf(buf, sizeof(buf), "(%s) ", ts->bprm->argv[0]);
+ } else if (i == 27) {
+ /* stack bottom */
+ val = start_stack;
+ snprintf(buf, sizeof(buf), "%"PRId64 " ", val);
+ } else {
+ /* for the rest, there is MasterCard */
+ snprintf(buf, sizeof(buf), "0%c", i == 43 ? '\n' : ' ');
+ }
+
+ len = strlen(buf);
+ if (write(fd, buf, len) != len) {
+ return -1;
+ }
+ }
+
+ return 0;
+}
+
+static int open_self_auxv(void *cpu_env, int fd)
+{
+ CPUState *cpu = ENV_GET_CPU((CPUArchState *)cpu_env);
+ TaskState *ts = cpu->opaque;
+ abi_ulong auxv = ts->info->saved_auxv;
+ abi_ulong len = ts->info->auxv_len;
+ char *ptr;
+
+ /*
+ * Auxiliary vector is stored in target process stack.
+ * read in whole auxv vector and copy it to file
+ */
+ ptr = lock_user(VERIFY_READ, auxv, len, 0);
+ if (ptr != NULL) {
+ while (len > 0) {
+ ssize_t r;
+ r = write(fd, ptr, len);
+ if (r <= 0) {
+ break;
+ }
+ len -= r;
+ ptr += r;
+ }
+ lseek(fd, 0, SEEK_SET);
+ unlock_user(ptr, auxv, len);
+ }
+
+ return 0;
+}
+
+static int is_proc_myself(const char *filename, const char *entry)
+{
+ if (!strncmp(filename, "/proc/", strlen("/proc/"))) {
+ filename += strlen("/proc/");
+ if (!strncmp(filename, "self/", strlen("self/"))) {
+ filename += strlen("self/");
+ } else if (*filename >= '1' && *filename <= '9') {
+ char myself[80];
+ snprintf(myself, sizeof(myself), "%d/", getpid());
+ if (!strncmp(filename, myself, strlen(myself))) {
+ filename += strlen(myself);
+ } else {
+ return 0;
+ }
+ } else {
+ return 0;
+ }
+ if (!strcmp(filename, entry)) {
+ return 1;
+ }
+ }
+ return 0;
+}
+
+#if defined(HOST_WORDS_BIGENDIAN) != defined(TARGET_WORDS_BIGENDIAN)
+static int is_proc(const char *filename, const char *entry)
+{
+ return strcmp(filename, entry) == 0;
+}
+
+static int open_net_route(void *cpu_env, int fd)
+{
+ FILE *fp;
+ char *line = NULL;
+ size_t len = 0;
+ ssize_t read;
+
+ fp = fopen("/proc/net/route", "r");
+ if (fp == NULL) {
+ return -1;
+ }
+
+ /* read header */
+
+ read = getline(&line, &len, fp);
+ dprintf(fd, "%s", line);
+
+ /* read routes */
+
+ while ((read = getline(&line, &len, fp)) != -1) {
+ char iface[16];
+ uint32_t dest, gw, mask;
+ unsigned int flags, refcnt, use, metric, mtu, window, irtt;
+ int fields;
+
+ fields = sscanf(line,
+ "%s\t%08x\t%08x\t%04x\t%d\t%d\t%d\t%08x\t%d\t%u\t%u\n",
+ iface, &dest, &gw, &flags, &refcnt, &use, &metric,
+ &mask, &mtu, &window, &irtt);
+ if (fields != 11) {
+ continue;
+ }
+ dprintf(fd, "%s\t%08x\t%08x\t%04x\t%d\t%d\t%d\t%08x\t%d\t%u\t%u\n",
+ iface, tswap32(dest), tswap32(gw), flags, refcnt, use,
+ metric, tswap32(mask), mtu, window, irtt);
+ }
+
+ free(line);
+ fclose(fp);
+
+ return 0;
+}
+#endif
+
+static int do_openat(void *cpu_env, int dirfd, const char *pathname,
+ int flags, mode_t mode)
+{
+ struct fake_open {
+ const char *filename;
+ int (*fill)(void *cpu_env, int fd);
+ int (*cmp)(const char *s1, const char *s2);
+ };
+ const struct fake_open *fake_open;
+ static const struct fake_open fakes[] = {
+ { "maps", open_self_maps, is_proc_myself },
+ { "stat", open_self_stat, is_proc_myself },
+ { "auxv", open_self_auxv, is_proc_myself },
+ { "cmdline", open_self_cmdline, is_proc_myself },
+#if defined(HOST_WORDS_BIGENDIAN) != defined(TARGET_WORDS_BIGENDIAN)
+ { "/proc/net/route", open_net_route, is_proc },
+#endif
+ { NULL, NULL, NULL }
+ };
+
+ if (is_proc_myself(pathname, "exe")) {
+ int execfd = qemu_getauxval(AT_EXECFD);
+ return execfd ? execfd : safe_openat(dirfd, exec_path, flags, mode);
+ }
+
+ for (fake_open = fakes; fake_open->filename; fake_open++) {
+ if (fake_open->cmp(pathname, fake_open->filename)) {
+ break;
+ }
+ }
+
+ if (fake_open->filename) {
+ const char *tmpdir;
+ char filename[PATH_MAX];
+ int fd, r;
+
+ /* create temporary file to map stat to */
+ tmpdir = getenv("TMPDIR");
+ if (!tmpdir) {
+ tmpdir = "/tmp";
+ }
+ snprintf(filename, sizeof(filename), "%s/qemu-open.XXXXXX", tmpdir);
+ fd = mkstemp(filename);
+ if (fd < 0) {
+ return fd;
+ }
+ unlink(filename);
+
+ r = fake_open->fill(cpu_env, fd);
+ if (r) {
+ int e = errno;
+ close(fd);
+ errno = e;
+ return r;
+ }
+ lseek(fd, 0, SEEK_SET);
+
+ return fd;
+ }
+
+ return safe_openat(dirfd, path(pathname), flags, mode);
+}
+
+#ifdef TARGET_NR_open
+SYSCALL_IMPL(open)
+{
+ char *p = lock_user_string(arg1);
+ abi_long ret;
+
+ if (!p) {
+ return -TARGET_EFAULT;
+ }
+ ret = get_errno(do_openat(cpu_env, AT_FDCWD, p,
+ target_to_host_bitmask(arg2, fcntl_flags_tbl),
+ arg3));
+ fd_trans_unregister(ret);
+ unlock_user(p, arg1, 0);
+ return ret;
+}
+#endif
+
+SYSCALL_IMPL(openat)
+{
+ char *p = lock_user_string(arg2);
+ abi_long ret;
+
+ if (!p) {
+ return -TARGET_EFAULT;
+ }
+ ret = get_errno(do_openat(cpu_env, arg1, p,
+ target_to_host_bitmask(arg3, fcntl_flags_tbl),
+ arg4));
+ fd_trans_unregister(ret);
+ unlock_user(p, arg2, 0);
+ return ret;
+}
@@ -6633,272 +6633,7 @@ int host_to_target_waitstatus(int status)
return status;
}
-static int open_self_cmdline(void *cpu_env, int fd)
-{
- CPUState *cpu = ENV_GET_CPU((CPUArchState *)cpu_env);
- struct linux_binprm *bprm = ((TaskState *)cpu->opaque)->bprm;
- int i;
-
- for (i = 0; i < bprm->argc; i++) {
- size_t len = strlen(bprm->argv[i]) + 1;
-
- if (write(fd, bprm->argv[i], len) != len) {
- return -1;
- }
- }
-
- return 0;
-}
-
-static int open_self_maps(void *cpu_env, int fd)
-{
- CPUState *cpu = ENV_GET_CPU((CPUArchState *)cpu_env);
- TaskState *ts = cpu->opaque;
- FILE *fp;
- char *line = NULL;
- size_t len = 0;
- ssize_t read;
-
- fp = fopen("/proc/self/maps", "r");
- if (fp == NULL) {
- return -1;
- }
-
- while ((read = getline(&line, &len, fp)) != -1) {
- int fields, dev_maj, dev_min, inode;
- uint64_t min, max, offset;
- char flag_r, flag_w, flag_x, flag_p;
- char path[512] = "";
- fields = sscanf(line, "%"PRIx64"-%"PRIx64" %c%c%c%c %"PRIx64" %x:%x %d"
- " %512s", &min, &max, &flag_r, &flag_w, &flag_x,
- &flag_p, &offset, &dev_maj, &dev_min, &inode, path);
-
- if ((fields < 10) || (fields > 11)) {
- continue;
- }
- if (h2g_valid(min)) {
- int flags = page_get_flags(h2g(min));
- max = h2g_valid(max - 1) ? max : (uintptr_t)g2h(GUEST_ADDR_MAX) + 1;
- if (page_check_range(h2g(min), max - min, flags) == -1) {
- continue;
- }
- if (h2g(min) == ts->info->stack_limit) {
- pstrcpy(path, sizeof(path), " [stack]");
- }
- dprintf(fd, TARGET_ABI_FMT_ptr "-" TARGET_ABI_FMT_ptr
- " %c%c%c%c %08" PRIx64 " %02x:%02x %d %s%s\n",
- h2g(min), h2g(max - 1) + 1, flag_r, flag_w,
- flag_x, flag_p, offset, dev_maj, dev_min, inode,
- path[0] ? " " : "", path);
- }
- }
-
- free(line);
- fclose(fp);
-
- return 0;
-}
-
-static int open_self_stat(void *cpu_env, int fd)
-{
- CPUState *cpu = ENV_GET_CPU((CPUArchState *)cpu_env);
- TaskState *ts = cpu->opaque;
- abi_ulong start_stack = ts->info->start_stack;
- int i;
-
- for (i = 0; i < 44; i++) {
- char buf[128];
- int len;
- uint64_t val = 0;
-
- if (i == 0) {
- /* pid */
- val = getpid();
- snprintf(buf, sizeof(buf), "%"PRId64 " ", val);
- } else if (i == 1) {
- /* app name */
- snprintf(buf, sizeof(buf), "(%s) ", ts->bprm->argv[0]);
- } else if (i == 27) {
- /* stack bottom */
- val = start_stack;
- snprintf(buf, sizeof(buf), "%"PRId64 " ", val);
- } else {
- /* for the rest, there is MasterCard */
- snprintf(buf, sizeof(buf), "0%c", i == 43 ? '\n' : ' ');
- }
-
- len = strlen(buf);
- if (write(fd, buf, len) != len) {
- return -1;
- }
- }
-
- return 0;
-}
-
-static int open_self_auxv(void *cpu_env, int fd)
-{
- CPUState *cpu = ENV_GET_CPU((CPUArchState *)cpu_env);
- TaskState *ts = cpu->opaque;
- abi_ulong auxv = ts->info->saved_auxv;
- abi_ulong len = ts->info->auxv_len;
- char *ptr;
-
- /*
- * Auxiliary vector is stored in target process stack.
- * read in whole auxv vector and copy it to file
- */
- ptr = lock_user(VERIFY_READ, auxv, len, 0);
- if (ptr != NULL) {
- while (len > 0) {
- ssize_t r;
- r = write(fd, ptr, len);
- if (r <= 0) {
- break;
- }
- len -= r;
- ptr += r;
- }
- lseek(fd, 0, SEEK_SET);
- unlock_user(ptr, auxv, len);
- }
-
- return 0;
-}
-
-static int is_proc_myself(const char *filename, const char *entry)
-{
- if (!strncmp(filename, "/proc/", strlen("/proc/"))) {
- filename += strlen("/proc/");
- if (!strncmp(filename, "self/", strlen("self/"))) {
- filename += strlen("self/");
- } else if (*filename >= '1' && *filename <= '9') {
- char myself[80];
- snprintf(myself, sizeof(myself), "%d/", getpid());
- if (!strncmp(filename, myself, strlen(myself))) {
- filename += strlen(myself);
- } else {
- return 0;
- }
- } else {
- return 0;
- }
- if (!strcmp(filename, entry)) {
- return 1;
- }
- }
- return 0;
-}
-
-#if defined(HOST_WORDS_BIGENDIAN) != defined(TARGET_WORDS_BIGENDIAN)
-static int is_proc(const char *filename, const char *entry)
-{
- return strcmp(filename, entry) == 0;
-}
-
-static int open_net_route(void *cpu_env, int fd)
-{
- FILE *fp;
- char *line = NULL;
- size_t len = 0;
- ssize_t read;
-
- fp = fopen("/proc/net/route", "r");
- if (fp == NULL) {
- return -1;
- }
-
- /* read header */
-
- read = getline(&line, &len, fp);
- dprintf(fd, "%s", line);
-
- /* read routes */
-
- while ((read = getline(&line, &len, fp)) != -1) {
- char iface[16];
- uint32_t dest, gw, mask;
- unsigned int flags, refcnt, use, metric, mtu, window, irtt;
- int fields;
-
- fields = sscanf(line,
- "%s\t%08x\t%08x\t%04x\t%d\t%d\t%d\t%08x\t%d\t%u\t%u\n",
- iface, &dest, &gw, &flags, &refcnt, &use, &metric,
- &mask, &mtu, &window, &irtt);
- if (fields != 11) {
- continue;
- }
- dprintf(fd, "%s\t%08x\t%08x\t%04x\t%d\t%d\t%d\t%08x\t%d\t%u\t%u\n",
- iface, tswap32(dest), tswap32(gw), flags, refcnt, use,
- metric, tswap32(mask), mtu, window, irtt);
- }
-
- free(line);
- fclose(fp);
-
- return 0;
-}
-#endif
-
-static int do_openat(void *cpu_env, int dirfd, const char *pathname, int flags, mode_t mode)
-{
- struct fake_open {
- const char *filename;
- int (*fill)(void *cpu_env, int fd);
- int (*cmp)(const char *s1, const char *s2);
- };
- const struct fake_open *fake_open;
- static const struct fake_open fakes[] = {
- { "maps", open_self_maps, is_proc_myself },
- { "stat", open_self_stat, is_proc_myself },
- { "auxv", open_self_auxv, is_proc_myself },
- { "cmdline", open_self_cmdline, is_proc_myself },
-#if defined(HOST_WORDS_BIGENDIAN) != defined(TARGET_WORDS_BIGENDIAN)
- { "/proc/net/route", open_net_route, is_proc },
-#endif
- { NULL, NULL, NULL }
- };
-
- if (is_proc_myself(pathname, "exe")) {
- int execfd = qemu_getauxval(AT_EXECFD);
- return execfd ? execfd : safe_openat(dirfd, exec_path, flags, mode);
- }
-
- for (fake_open = fakes; fake_open->filename; fake_open++) {
- if (fake_open->cmp(pathname, fake_open->filename)) {
- break;
- }
- }
-
- if (fake_open->filename) {
- const char *tmpdir;
- char filename[PATH_MAX];
- int fd, r;
-
- /* create temporary file to map stat to */
- tmpdir = getenv("TMPDIR");
- if (!tmpdir)
- tmpdir = "/tmp";
- snprintf(filename, sizeof(filename), "%s/qemu-open.XXXXXX", tmpdir);
- fd = mkstemp(filename);
- if (fd < 0) {
- return fd;
- }
- unlink(filename);
-
- if ((r = fake_open->fill(cpu_env, fd))) {
- int e = errno;
- close(fd);
- errno = e;
- return r;
- }
- lseek(fd, 0, SEEK_SET);
-
- return fd;
- }
-
- return safe_openat(dirfd, path(pathname), flags, mode);
-}
+static int is_proc_myself(const char *filename, const char *entry);
#define TIMER_MAGIC 0x0caf0000
#define TIMER_MAGIC_MASK 0xffff0000
@@ -7083,26 +6818,6 @@ static abi_long do_syscall1(void *cpu_env, int num, abi_long arg1,
unlock_user(p, arg2, 0);
return ret;
-#ifdef TARGET_NR_open
- case TARGET_NR_open:
- if (!(p = lock_user_string(arg1)))
- return -TARGET_EFAULT;
- ret = get_errno(do_openat(cpu_env, AT_FDCWD, p,
- target_to_host_bitmask(arg2, fcntl_flags_tbl),
- arg3));
- fd_trans_unregister(ret);
- unlock_user(p, arg1, 0);
- return ret;
-#endif
- case TARGET_NR_openat:
- if (!(p = lock_user_string(arg2)))
- return -TARGET_EFAULT;
- ret = get_errno(do_openat(cpu_env, arg1, p,
- target_to_host_bitmask(arg3, fcntl_flags_tbl),
- arg4));
- fd_trans_unregister(ret);
- unlock_user(p, arg2, 0);
- return ret;
#if defined(TARGET_NR_name_to_handle_at) && defined(CONFIG_OPEN_BY_HANDLE)
case TARGET_NR_name_to_handle_at:
ret = do_name_to_handle_at(arg1, arg2, arg3, arg4, arg5);
@@ -11643,6 +11358,7 @@ static abi_long do_syscall1(void *cpu_env, int num, abi_long arg1,
int64_t arg2, int64_t arg3, int64_t arg4, \
int64_t arg5, int64_t arg6)
+#include "syscall-file.inc.c"
#undef SYSCALL_IMPL
#undef SYSCALL_ARGS
@@ -677,12 +677,6 @@
#ifdef TARGET_NR_olduname
{ TARGET_NR_olduname, "olduname" , NULL, NULL, NULL },
#endif
-#ifdef TARGET_NR_open
-{ TARGET_NR_open, "open" , NULL, print_open, NULL },
-#endif
-#ifdef TARGET_NR_openat
-{ TARGET_NR_openat, "openat" , NULL, print_openat, NULL },
-#endif
#ifdef TARGET_NR_osf_adjtime
{ TARGET_NR_osf_adjtime, "osf_adjtime" , NULL, NULL, NULL },
#endif
For the moment, leave a forward declaration for is_proc_myself until the readlink syscalls are also moved to syscall-file.inc.c. Signed-off-by: Richard Henderson <richard.henderson@linaro.org> --- linux-user/syscall-defs.h | 5 + linux-user/strace.c | 35 ---- linux-user/syscall-file.inc.c | 325 ++++++++++++++++++++++++++++++++++ linux-user/syscall.c | 288 +----------------------------- linux-user/strace.list | 6 - 5 files changed, 332 insertions(+), 327 deletions(-) create mode 100644 linux-user/syscall-file.inc.c -- 2.17.1