#include "qapi/error.h"
#include "fd-trans.h"
#include "tcg/tcg.h"
+#include "cpu_loop-common.h"
#ifndef CLONE_IO
#define CLONE_IO 0x80000000 /* Clone io context */
#ifdef __NR_exit_group
_syscall1(int,exit_group,int,error_code)
#endif
+#if defined(__NR_close_range) && defined(TARGET_NR_close_range)
+#define __NR_sys_close_range __NR_close_range
+_syscall3(int,sys_close_range,int,first,int,last,int,flags)
+#ifndef CLOSE_RANGE_CLOEXEC
+#define CLOSE_RANGE_CLOEXEC (1U << 2)
+#endif
+#endif
#if defined(__NR_futex)
_syscall6(int,sys_futex,int *,uaddr,int,op,int,val,
const struct timespec *,timeout,int *,uaddr2,int,val3)
_syscall6(int,sys_futex_time64,int *,uaddr,int,op,int,val,
const struct timespec *,timeout,int *,uaddr2,int,val3)
#endif
+#if defined(__NR_pidfd_open) && defined(TARGET_NR_pidfd_open)
+_syscall2(int, pidfd_open, pid_t, pid, unsigned int, flags);
+#endif
+#if defined(__NR_pidfd_send_signal) && defined(TARGET_NR_pidfd_send_signal)
+_syscall4(int, pidfd_send_signal, int, pidfd, int, sig, siginfo_t *, info,
+ unsigned int, flags);
+#endif
+#if defined(__NR_pidfd_getfd) && defined(TARGET_NR_pidfd_getfd)
+_syscall3(int, pidfd_getfd, int, pidfd, int, targetfd, unsigned int, flags);
+#endif
#define __NR_sys_sched_getaffinity __NR_sched_getaffinity
_syscall3(int, sys_sched_getaffinity, pid_t, pid, unsigned int, len,
unsigned long *, user_mask_ptr);
#if defined(TARGET_NR_timer_create)
/* Maximum of 32 active POSIX timers allowed at any one time. */
-static timer_t g_posix_timers[32] = { 0, } ;
+#define GUEST_TIMER_MAX 32
+static timer_t g_posix_timers[GUEST_TIMER_MAX];
+static int g_posix_timer_allocated[GUEST_TIMER_MAX];
static inline int next_free_host_timer(void)
{
- int k ;
- /* FIXME: Does finding the next free slot require a lock? */
- for (k = 0; k < ARRAY_SIZE(g_posix_timers); k++) {
- if (g_posix_timers[k] == 0) {
- g_posix_timers[k] = (timer_t) 1;
+ int k;
+ for (k = 0; k < ARRAY_SIZE(g_posix_timer_allocated); k++) {
+ if (qatomic_xchg(g_posix_timer_allocated + k, 1) == 0) {
return k;
}
}
return -1;
}
+
+static inline void free_host_timer_slot(int id)
+{
+ qatomic_store_release(g_posix_timer_allocated + id, 0);
+}
#endif
static inline int host_to_target_errno(int host_errno)
#endif
safe_syscall5(int, waitid, idtype_t, idtype, id_t, id, siginfo_t *, infop, \
int, options, struct rusage *, rusage)
-safe_syscall3(int, execve, const char *, filename, char **, argv, char **, envp)
+safe_syscall5(int, execveat, int, dirfd, const char *, filename,
+ char **, argv, char **, envp, int, flags)
#if defined(TARGET_NR_select) || defined(TARGET_NR__newselect) || \
defined(TARGET_NR_pselect6) || defined(TARGET_NR_pselect6_time64)
safe_syscall6(int, pselect6, int, nfds, fd_set *, readfds, fd_set *, writefds, \
__get_user(cred->pid, &target_cred->pid);
__get_user(cred->uid, &target_cred->uid);
__get_user(cred->gid, &target_cred->gid);
+ } else if (cmsg->cmsg_level == SOL_ALG) {
+ uint32_t *dst = (uint32_t *)data;
+
+ memcpy(dst, target_data, len);
+ /* fix endianess of first 32-bit word */
+ if (len >= sizeof(uint32_t)) {
+ *dst = tswap32(*dst);
+ }
} else {
qemu_log_mask(LOG_UNIMP, "Unsupported ancillary data: %d/%d\n",
cmsg->cmsg_level, cmsg->cmsg_type);
ret = get_errno(getsockopt(sockfd, level, optname, &val, &lv));
if (ret < 0)
return ret;
- if (optname == SO_TYPE) {
+ switch (optname) {
+ case SO_TYPE:
val = host_to_target_sock_type(val);
+ break;
+ case SO_ERROR:
+ val = host_to_target_errno(val);
+ break;
}
if (len > lv)
len = lv;
if (fd_trans_host_to_target_data(fd)) {
ret = fd_trans_host_to_target_data(fd)(msg.msg_iov->iov_base,
MIN(msg.msg_iov->iov_len, len));
- } else {
+ }
+ if (!is_error(ret)) {
ret = host_to_target_cmsg(msgp, &msg);
}
if (!is_error(ret)) {
for (i = 0; i < se->nb_fields; i++) {
if (dst_offsets[i] == offsetof(struct rtentry, rt_dev)) {
assert(*field_types == TYPE_PTRVOID);
- target_rt_dev_ptr = (abi_ulong *)(argptr + src_offsets[i]);
+ target_rt_dev_ptr = argptr + src_offsets[i];
host_rt_dev_ptr = (unsigned long *)(buf_temp + dst_offsets[i]);
if (*target_rt_dev_ptr != 0) {
*host_rt_dev_ptr = (unsigned long)lock_user_string(
futexes locally would make futexes shared between multiple processes
tricky. However they're probably useless because guest atomic
operations won't work either. */
-#if defined(TARGET_NR_futex)
-static int do_futex(CPUState *cpu, target_ulong uaddr, int op, int val,
- target_ulong timeout, target_ulong uaddr2, int val3)
+#if defined(TARGET_NR_futex) || defined(TARGET_NR_futex_time64)
+static int do_futex(CPUState *cpu, bool time64, target_ulong uaddr,
+ int op, int val, target_ulong timeout,
+ target_ulong uaddr2, int val3)
{
- struct timespec ts, *pts;
+ struct timespec ts, *pts = NULL;
+ void *haddr2 = NULL;
int base_op;
- /* ??? We assume FUTEX_* constants are the same on both host
- and target. */
+ /* We assume FUTEX_* constants are the same on both host and target. */
#ifdef FUTEX_CMD_MASK
base_op = op & FUTEX_CMD_MASK;
#else
switch (base_op) {
case FUTEX_WAIT:
case FUTEX_WAIT_BITSET:
- if (timeout) {
- pts = &ts;
- target_to_host_timespec(pts, timeout);
- } else {
- pts = NULL;
- }
- return do_safe_futex(g2h(cpu, uaddr),
- op, tswap32(val), pts, NULL, val3);
+ val = tswap32(val);
+ break;
+ case FUTEX_WAIT_REQUEUE_PI:
+ val = tswap32(val);
+ haddr2 = g2h(cpu, uaddr2);
+ break;
+ case FUTEX_LOCK_PI:
+ case FUTEX_LOCK_PI2:
+ break;
case FUTEX_WAKE:
- return do_safe_futex(g2h(cpu, uaddr),
- op, val, NULL, NULL, 0);
+ case FUTEX_WAKE_BITSET:
+ case FUTEX_TRYLOCK_PI:
+ case FUTEX_UNLOCK_PI:
+ timeout = 0;
+ break;
case FUTEX_FD:
- return do_safe_futex(g2h(cpu, uaddr),
- op, val, NULL, NULL, 0);
- case FUTEX_REQUEUE:
+ val = target_to_host_signal(val);
+ timeout = 0;
+ break;
case FUTEX_CMP_REQUEUE:
+ case FUTEX_CMP_REQUEUE_PI:
+ val3 = tswap32(val3);
+ /* fall through */
+ case FUTEX_REQUEUE:
case FUTEX_WAKE_OP:
- /* For FUTEX_REQUEUE, FUTEX_CMP_REQUEUE, and FUTEX_WAKE_OP, the
- TIMEOUT parameter is interpreted as a uint32_t by the kernel.
- But the prototype takes a `struct timespec *'; insert casts
- to satisfy the compiler. We do not need to tswap TIMEOUT
- since it's not compared to guest memory. */
- pts = (struct timespec *)(uintptr_t) timeout;
- return do_safe_futex(g2h(cpu, uaddr), op, val, pts, g2h(cpu, uaddr2),
- (base_op == FUTEX_CMP_REQUEUE
- ? tswap32(val3) : val3));
+ /*
+ * For these, the 4th argument is not TIMEOUT, but VAL2.
+ * But the prototype of do_safe_futex takes a pointer, so
+ * insert casts to satisfy the compiler. We do not need
+ * to tswap VAL2 since it's not compared to guest memory.
+ */
+ pts = (struct timespec *)(uintptr_t)timeout;
+ timeout = 0;
+ haddr2 = g2h(cpu, uaddr2);
+ break;
default:
return -TARGET_ENOSYS;
}
-}
-#endif
-
-#if defined(TARGET_NR_futex_time64)
-static int do_futex_time64(CPUState *cpu, target_ulong uaddr, int op,
- int val, target_ulong timeout,
- target_ulong uaddr2, int val3)
-{
- struct timespec ts, *pts;
- int base_op;
-
- /* ??? We assume FUTEX_* constants are the same on both host
- and target. */
-#ifdef FUTEX_CMD_MASK
- base_op = op & FUTEX_CMD_MASK;
-#else
- base_op = op;
-#endif
- switch (base_op) {
- case FUTEX_WAIT:
- case FUTEX_WAIT_BITSET:
- if (timeout) {
- pts = &ts;
- if (target_to_host_timespec64(pts, timeout)) {
- return -TARGET_EFAULT;
- }
- } else {
- pts = NULL;
+ if (timeout) {
+ pts = &ts;
+ if (time64
+ ? target_to_host_timespec64(pts, timeout)
+ : target_to_host_timespec(pts, timeout)) {
+ return -TARGET_EFAULT;
}
- return do_safe_futex(g2h(cpu, uaddr), op,
- tswap32(val), pts, NULL, val3);
- case FUTEX_WAKE:
- return do_safe_futex(g2h(cpu, uaddr), op, val, NULL, NULL, 0);
- case FUTEX_FD:
- return do_safe_futex(g2h(cpu, uaddr), op, val, NULL, NULL, 0);
- case FUTEX_REQUEUE:
- case FUTEX_CMP_REQUEUE:
- case FUTEX_WAKE_OP:
- /* For FUTEX_REQUEUE, FUTEX_CMP_REQUEUE, and FUTEX_WAKE_OP, the
- TIMEOUT parameter is interpreted as a uint32_t by the kernel.
- But the prototype takes a `struct timespec *'; insert casts
- to satisfy the compiler. We do not need to tswap TIMEOUT
- since it's not compared to guest memory. */
- pts = (struct timespec *)(uintptr_t) timeout;
- return do_safe_futex(g2h(cpu, uaddr), op, val, pts, g2h(cpu, uaddr2),
- (base_op == FUTEX_CMP_REQUEUE
- ? tswap32(val3) : val3));
- default:
- return -TARGET_ENOSYS;
}
+ return do_safe_futex(g2h(cpu, uaddr), op, val, pts, haddr2, val3);
}
#endif
continue;
}
+#ifdef TARGET_HPPA
+ if (h2g(max) == ts->info->stack_limit) {
+#else
if (h2g(min) == ts->info->stack_limit) {
+#endif
path = "[stack]";
} else {
path = e->path;
return 0;
}
+static void excp_dump_file(FILE *logfile, CPUArchState *env,
+ const char *fmt, int code)
+{
+ if (logfile) {
+ CPUState *cs = env_cpu(env);
+
+ fprintf(logfile, fmt, code);
+ fprintf(logfile, "Failing executable: %s\n", exec_path);
+ cpu_dump_state(cs, logfile, 0);
+ open_self_maps(env, fileno(logfile));
+ }
+}
+
+void target_exception_dump(CPUArchState *env, const char *fmt, int code)
+{
+ /* dump to console */
+ excp_dump_file(stderr, env, fmt, code);
+
+ /* dump to log file */
+ if (qemu_log_separate()) {
+ FILE *logfile = qemu_log_trylock();
+
+ excp_dump_file(logfile, env, fmt, code);
+ qemu_log_unlock(logfile);
+ }
+}
+
#if HOST_BIG_ENDIAN != TARGET_BIG_ENDIAN || \
defined(TARGET_SPARC) || defined(TARGET_M68K) || defined(TARGET_HPPA)
static int is_proc(const char *filename, const char *entry)
#if defined(TARGET_HPPA)
static int open_cpuinfo(CPUArchState *cpu_env, int fd)
{
- dprintf(fd, "cpu family\t: PA-RISC 1.1e\n");
- dprintf(fd, "cpu\t\t: PA7300LC (PCX-L2)\n");
- dprintf(fd, "capabilities\t: os32\n");
- dprintf(fd, "model\t\t: 9000/778/B160L\n");
- dprintf(fd, "model name\t: Merlin L2 160 QEMU (9000/778/B160L)\n");
+ int i, num_cpus;
+
+ num_cpus = sysconf(_SC_NPROCESSORS_ONLN);
+ for (i = 0; i < num_cpus; i++) {
+ dprintf(fd, "processor\t: %d\n", i);
+ dprintf(fd, "cpu family\t: PA-RISC 1.1e\n");
+ dprintf(fd, "cpu\t\t: PA7300LC (PCX-L2)\n");
+ dprintf(fd, "capabilities\t: os32\n");
+ dprintf(fd, "model\t\t: 9000/778/B160L - "
+ "Merlin L2 160 QEMU (9000/778/B160L)\n\n");
+ }
return 0;
}
#endif
};
if (is_proc_myself(pathname, "exe")) {
- int execfd = qemu_getauxval(AT_EXECFD);
- return execfd ? execfd : safe_openat(dirfd, exec_path, flags, mode);
+ return safe_openat(dirfd, exec_path, flags, mode);
}
for (fake_open = fakes; fake_open->filename; fake_open++) {
return safe_openat(dirfd, path(pathname), flags, mode);
}
+static int do_execveat(CPUArchState *cpu_env, int dirfd,
+ abi_long pathname, abi_long guest_argp,
+ abi_long guest_envp, int flags)
+{
+ int ret;
+ char **argp, **envp;
+ int argc, envc;
+ abi_ulong gp;
+ abi_ulong addr;
+ char **q;
+ void *p;
+
+ argc = 0;
+
+ for (gp = guest_argp; gp; gp += sizeof(abi_ulong)) {
+ if (get_user_ual(addr, gp)) {
+ return -TARGET_EFAULT;
+ }
+ if (!addr) {
+ break;
+ }
+ argc++;
+ }
+ envc = 0;
+ for (gp = guest_envp; gp; gp += sizeof(abi_ulong)) {
+ if (get_user_ual(addr, gp)) {
+ return -TARGET_EFAULT;
+ }
+ if (!addr) {
+ break;
+ }
+ envc++;
+ }
+
+ argp = g_new0(char *, argc + 1);
+ envp = g_new0(char *, envc + 1);
+
+ for (gp = guest_argp, q = argp; gp; gp += sizeof(abi_ulong), q++) {
+ if (get_user_ual(addr, gp)) {
+ goto execve_efault;
+ }
+ if (!addr) {
+ break;
+ }
+ *q = lock_user_string(addr);
+ if (!*q) {
+ goto execve_efault;
+ }
+ }
+ *q = NULL;
+
+ for (gp = guest_envp, q = envp; gp; gp += sizeof(abi_ulong), q++) {
+ if (get_user_ual(addr, gp)) {
+ goto execve_efault;
+ }
+ if (!addr) {
+ break;
+ }
+ *q = lock_user_string(addr);
+ if (!*q) {
+ goto execve_efault;
+ }
+ }
+ *q = NULL;
+
+ /*
+ * Although execve() is not an interruptible syscall it is
+ * a special case where we must use the safe_syscall wrapper:
+ * if we allow a signal to happen before we make the host
+ * syscall then we will 'lose' it, because at the point of
+ * execve the process leaves QEMU's control. So we use the
+ * safe syscall wrapper to ensure that we either take the
+ * signal as a guest signal, or else it does not happen
+ * before the execve completes and makes it the other
+ * program's problem.
+ */
+ p = lock_user_string(pathname);
+ if (!p) {
+ goto execve_efault;
+ }
+
+ if (is_proc_myself(p, "exe")) {
+ ret = get_errno(safe_execveat(dirfd, exec_path, argp, envp, flags));
+ } else {
+ ret = get_errno(safe_execveat(dirfd, p, argp, envp, flags));
+ }
+
+ unlock_user(p, pathname, 0);
+
+ goto execve_end;
+
+execve_efault:
+ ret = -TARGET_EFAULT;
+
+execve_end:
+ for (gp = guest_argp, q = argp; *q; gp += sizeof(abi_ulong), q++) {
+ if (get_user_ual(addr, gp) || !addr) {
+ break;
+ }
+ unlock_user(*q, addr, 0);
+ }
+ for (gp = guest_envp, q = envp; *q; gp += sizeof(abi_ulong), q++) {
+ if (get_user_ual(addr, gp) || !addr) {
+ break;
+ }
+ unlock_user(*q, addr, 0);
+ }
+
+ g_free(argp);
+ g_free(envp);
+ return ret;
+}
+
#define TIMER_MAGIC 0x0caf0000
#define TIMER_MAGIC_MASK 0xffff0000
if (CPU_NEXT(first_cpu)) {
TaskState *ts = cpu->opaque;
- object_property_set_bool(OBJECT(cpu), "realized", false, NULL);
+ if (ts->child_tidptr) {
+ put_user_u32(0, ts->child_tidptr);
+ do_sys_futex(g2h(cpu, ts->child_tidptr),
+ FUTEX_WAKE, INT_MAX, NULL, NULL, 0);
+ }
+
+ object_unparent(OBJECT(cpu));
object_unref(OBJECT(cpu));
/*
* At this point the CPU should be unrealized and removed
pthread_mutex_unlock(&clone_lock);
- if (ts->child_tidptr) {
- put_user_u32(0, ts->child_tidptr);
- do_sys_futex(g2h(cpu, ts->child_tidptr),
- FUTEX_WAKE, INT_MAX, NULL, NULL, 0);
- }
thread_cpu = NULL;
g_free(ts);
rcu_unregister_thread();
ret = do_open_by_handle_at(arg1, arg2, arg3);
fd_trans_unregister(ret);
return ret;
+#endif
+#if defined(__NR_pidfd_open) && defined(TARGET_NR_pidfd_open)
+ case TARGET_NR_pidfd_open:
+ return get_errno(pidfd_open(arg1, arg2));
+#endif
+#if defined(__NR_pidfd_send_signal) && defined(TARGET_NR_pidfd_send_signal)
+ case TARGET_NR_pidfd_send_signal:
+ {
+ siginfo_t uinfo, *puinfo;
+
+ if (arg3) {
+ p = lock_user(VERIFY_READ, arg3, sizeof(target_siginfo_t), 1);
+ if (!p) {
+ return -TARGET_EFAULT;
+ }
+ target_to_host_siginfo(&uinfo, p);
+ unlock_user(p, arg3, 0);
+ puinfo = &uinfo;
+ } else {
+ puinfo = NULL;
+ }
+ ret = get_errno(pidfd_send_signal(arg1, target_to_host_signal(arg2),
+ puinfo, arg4));
+ }
+ return ret;
+#endif
+#if defined(__NR_pidfd_getfd) && defined(TARGET_NR_pidfd_getfd)
+ case TARGET_NR_pidfd_getfd:
+ return get_errno(pidfd_getfd(arg1, arg2, arg3));
#endif
case TARGET_NR_close:
fd_trans_unregister(arg1);
return get_errno(close(arg1));
+#if defined(__NR_close_range) && defined(TARGET_NR_close_range)
+ case TARGET_NR_close_range:
+ ret = get_errno(sys_close_range(arg1, arg2, arg3));
+ if (ret == 0 && !(arg3 & CLOSE_RANGE_CLOEXEC)) {
+ abi_long fd, maxfd;
+ maxfd = MIN(arg2, target_fd_max);
+ for (fd = arg1; fd < maxfd; fd++) {
+ fd_trans_unregister(fd);
+ }
+ }
+ return ret;
+#endif
case TARGET_NR_brk:
return do_brk(arg1);
unlock_user(p, arg2, 0);
return ret;
#endif
+ case TARGET_NR_execveat:
+ return do_execveat(cpu_env, arg1, arg2, arg3, arg4, arg5);
case TARGET_NR_execve:
- {
- char **argp, **envp;
- int argc, envc;
- abi_ulong gp;
- abi_ulong guest_argp;
- abi_ulong guest_envp;
- abi_ulong addr;
- char **q;
-
- argc = 0;
- guest_argp = arg2;
- for (gp = guest_argp; gp; gp += sizeof(abi_ulong)) {
- if (get_user_ual(addr, gp))
- return -TARGET_EFAULT;
- if (!addr)
- break;
- argc++;
- }
- envc = 0;
- guest_envp = arg3;
- for (gp = guest_envp; gp; gp += sizeof(abi_ulong)) {
- if (get_user_ual(addr, gp))
- return -TARGET_EFAULT;
- if (!addr)
- break;
- envc++;
- }
-
- argp = g_new0(char *, argc + 1);
- envp = g_new0(char *, envc + 1);
-
- for (gp = guest_argp, q = argp; gp;
- gp += sizeof(abi_ulong), q++) {
- if (get_user_ual(addr, gp))
- goto execve_efault;
- if (!addr)
- break;
- if (!(*q = lock_user_string(addr)))
- goto execve_efault;
- }
- *q = NULL;
-
- for (gp = guest_envp, q = envp; gp;
- gp += sizeof(abi_ulong), q++) {
- if (get_user_ual(addr, gp))
- goto execve_efault;
- if (!addr)
- break;
- if (!(*q = lock_user_string(addr)))
- goto execve_efault;
- }
- *q = NULL;
-
- if (!(p = lock_user_string(arg1)))
- goto execve_efault;
- /* Although execve() is not an interruptible syscall it is
- * a special case where we must use the safe_syscall wrapper:
- * if we allow a signal to happen before we make the host
- * syscall then we will 'lose' it, because at the point of
- * execve the process leaves QEMU's control. So we use the
- * safe syscall wrapper to ensure that we either take the
- * signal as a guest signal, or else it does not happen
- * before the execve completes and makes it the other
- * program's problem.
- */
- ret = get_errno(safe_execve(p, argp, envp));
- unlock_user(p, arg1, 0);
-
- goto execve_end;
-
- execve_efault:
- ret = -TARGET_EFAULT;
-
- execve_end:
- for (gp = guest_argp, q = argp; *q;
- gp += sizeof(abi_ulong), q++) {
- if (get_user_ual(addr, gp)
- || !addr)
- break;
- unlock_user(*q, addr, 0);
- }
- for (gp = guest_envp, q = envp; *q;
- gp += sizeof(abi_ulong), q++) {
- if (get_user_ual(addr, gp)
- || !addr)
- break;
- unlock_user(*q, addr, 0);
- }
-
- g_free(argp);
- g_free(envp);
- }
- return ret;
+ return do_execveat(cpu_env, AT_FDCWD, arg1, arg2, arg3, 0);
case TARGET_NR_chdir:
if (!(p = lock_user_string(arg1)))
return -TARGET_EFAULT;
unlock_user(p, arg2, 0);
return ret;
#endif
+#if defined(TARGET_NR_faccessat2)
+ case TARGET_NR_faccessat2:
+ if (!(p = lock_user_string(arg2))) {
+ return -TARGET_EFAULT;
+ }
+ ret = get_errno(faccessat(arg1, p, arg3, arg4));
+ unlock_user(p, arg2, 0);
+ return ret;
+#endif
#ifdef TARGET_NR_nice /* not on alpha */
case TARGET_NR_nice:
return get_errno(nice(arg1));
}
target_to_host_siginfo(&uinfo, p);
unlock_user(p, arg3, 0);
- ret = get_errno(sys_rt_sigqueueinfo(arg1, arg2, &uinfo));
+ ret = get_errno(sys_rt_sigqueueinfo(arg1, target_to_host_signal(arg2), &uinfo));
}
return ret;
case TARGET_NR_rt_tgsigqueueinfo:
}
target_to_host_siginfo(&uinfo, p);
unlock_user(p, arg4, 0);
- ret = get_errno(sys_rt_tgsigqueueinfo(arg1, arg2, arg3, &uinfo));
+ ret = get_errno(sys_rt_tgsigqueueinfo(arg1, arg2, target_to_host_signal(arg3), &uinfo));
}
return ret;
#ifdef TARGET_NR_sigreturn
p2 = lock_user(VERIFY_WRITE, arg3, arg4, 0);
if (!p || !p2) {
ret = -TARGET_EFAULT;
+ } else if (!arg4) {
+ /* Short circuit this for the magic exe check. */
+ ret = -TARGET_EINVAL;
} else if (is_proc_myself((const char *)p, "exe")) {
char real[PATH_MAX], *temp;
temp = realpath(exec_path, real);
- ret = temp == NULL ? get_errno(-1) : strlen(real) ;
- snprintf((char *)p2, arg4, "%s", real);
+ /* Return value is # of bytes that we wrote to the buffer. */
+ if (temp == NULL) {
+ ret = get_errno(-1);
+ } else {
+ /* Don't worry about sign mismatch as earlier mapping
+ * logic would have thrown a bad address error. */
+ ret = MIN(strlen(real), arg4);
+ /* We cannot NUL terminate the string. */
+ memcpy(p2, real, ret);
+ }
} else {
ret = get_errno(readlinkat(arg1, path(p), p2, arg4));
}
return -host_to_target_errno(ret);
#endif
-#if TARGET_ABI_BITS == 32
+#if TARGET_ABI_BITS == 32 && !defined(TARGET_ABI_MIPSN32)
#ifdef TARGET_NR_fadvise64_64
case TARGET_NR_fadvise64_64:
return get_errno(sys_gettid());
#ifdef TARGET_NR_readahead
case TARGET_NR_readahead:
-#if TARGET_ABI_BITS == 32
+#if TARGET_ABI_BITS == 32 && !defined(TARGET_ABI_MIPSN32)
if (regpairs_aligned(cpu_env, num)) {
arg2 = arg3;
arg3 = arg4;
#endif
#ifdef TARGET_NR_futex
case TARGET_NR_futex:
- return do_futex(cpu, arg1, arg2, arg3, arg4, arg5, arg6);
+ return do_futex(cpu, false, arg1, arg2, arg3, arg4, arg5, arg6);
#endif
#ifdef TARGET_NR_futex_time64
case TARGET_NR_futex_time64:
- return do_futex_time64(cpu, arg1, arg2, arg3, arg4, arg5, arg6);
+ return do_futex(cpu, true, arg1, arg2, arg3, arg4, arg5, arg6);
#endif
#ifdef CONFIG_INOTIFY
#if defined(TARGET_NR_inotify_init)
#endif /* CONFIG_EVENTFD */
#if defined(CONFIG_FALLOCATE) && defined(TARGET_NR_fallocate)
case TARGET_NR_fallocate:
-#if TARGET_ABI_BITS == 32
+#if TARGET_ABI_BITS == 32 && !defined(TARGET_ABI_MIPSN32)
ret = get_errno(fallocate(arg1, arg2, target_offset64(arg3, arg4),
target_offset64(arg5, arg6)));
#else
#if defined(CONFIG_SYNC_FILE_RANGE)
#if defined(TARGET_NR_sync_file_range)
case TARGET_NR_sync_file_range:
-#if TARGET_ABI_BITS == 32
+#if TARGET_ABI_BITS == 32 && !defined(TARGET_ABI_MIPSN32)
#if defined(TARGET_MIPS)
ret = get_errno(sync_file_range(arg1, target_offset64(arg3, arg4),
target_offset64(arg5, arg6), arg7));
case TARGET_NR_arm_sync_file_range:
#endif
/* This is like sync_file_range but the arguments are reordered */
-#if TARGET_ABI_BITS == 32
+#if TARGET_ABI_BITS == 32 && !defined(TARGET_ABI_MIPSN32)
ret = get_errno(sync_file_range(arg1, target_offset64(arg3, arg4),
target_offset64(arg5, arg6), arg2));
#else
phost_sevp = &host_sevp;
ret = target_to_host_sigevent(phost_sevp, arg2);
if (ret != 0) {
+ free_host_timer_slot(timer_index);
return ret;
}
}
ret = get_errno(timer_create(clkid, phost_sevp, phtimer));
if (ret) {
- phtimer = NULL;
+ free_host_timer_slot(timer_index);
} else {
if (put_user(TIMER_MAGIC | timer_index, arg3, target_timer_t)) {
+ timer_delete(*phtimer);
+ free_host_timer_slot(timer_index);
return -TARGET_EFAULT;
}
}
} else {
timer_t htimer = g_posix_timers[timerid];
ret = get_errno(timer_delete(htimer));
- g_posix_timers[timerid] = 0;
+ free_host_timer_slot(timerid);
}
return ret;
}
projects / mirror_qemu.git / blobdiff