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| author | Timothy E Baldwin <T.E.Baldwin99@members.leeds.ac.uk> | 2016-05-12 18:47:48 +0100 |
|---|---|---|
| committer | Riku Voipio <riku.voipio@linaro.org> | 2016-05-27 14:50:38 +0300 |
| commit | c10a07387b77b94d8f7233f3b5bb559211d4e49a (patch) | |
| tree | 3e0e38e00c326c57282ac2c620d84ae6acd68fcf /linux-user | |
| parent | 50afd02b841cf0ccbc988a0fa868bbc4ca67c09e (diff) | |
| download | qemu-c10a07387b77b94d8f7233f3b5bb559211d4e49a.zip qemu-c10a07387b77b94d8f7233f3b5bb559211d4e49a.tar.gz qemu-c10a07387b77b94d8f7233f3b5bb559211d4e49a.tar.bz2 | |
linux-user: Use safe_syscall for open and openat system calls
Restart open() and openat() if signals occur before,
or during with SA_RESTART.
Signed-off-by: Timothy Edward Baldwin <T.E.Baldwin99@members.leeds.ac.uk>
Message-id: 1441497448-32489-17-git-send-email-T.E.Baldwin99@members.leeds.ac.uk
[PMM: Adjusted to follow new -1-and-set-errno safe_syscall convention]
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Riku Voipio <riku.voipio@linaro.org>
Diffstat (limited to 'linux-user')
| -rw-r--r-- | linux-user/syscall.c | 18 |
1 files changed, 4 insertions, 14 deletions
diff --git a/linux-user/syscall.c b/linux-user/syscall.c index bee1360..0037ee7 100644 --- a/linux-user/syscall.c +++ b/linux-user/syscall.c @@ -359,18 +359,6 @@ static int sys_getcwd1(char *buf, size_t size) return strlen(buf)+1; } -static int sys_openat(int dirfd, const char *pathname, int flags, mode_t mode) -{ - /* - * open(2) has extra parameter 'mode' when called with - * flag O_CREAT. - */ - if ((flags & O_CREAT) != 0) { - return (openat(dirfd, pathname, flags, mode)); - } - return (openat(dirfd, pathname, flags)); -} - #ifdef TARGET_NR_utimensat #ifdef CONFIG_UTIMENSAT static int sys_utimensat(int dirfd, const char *pathname, @@ -709,6 +697,8 @@ static type safe_##name(type1 arg1, type2 arg2, type3 arg3, type4 arg4, \ safe_syscall3(ssize_t, read, int, fd, void *, buff, size_t, count) safe_syscall3(ssize_t, write, int, fd, const void *, buff, size_t, count) +safe_syscall4(int, openat, int, dirfd, const char *, pathname, \ + int, flags, mode_t, mode) static inline int host_to_target_sock_type(int host_type) { @@ -5851,7 +5841,7 @@ static int do_openat(void *cpu_env, int dirfd, const char *pathname, int flags, if (is_proc_myself(pathname, "exe")) { int execfd = qemu_getauxval(AT_EXECFD); - return execfd ? execfd : sys_openat(dirfd, exec_path, flags, mode); + return execfd ? execfd : safe_openat(dirfd, exec_path, flags, mode); } for (fake_open = fakes; fake_open->filename; fake_open++) { @@ -5887,7 +5877,7 @@ static int do_openat(void *cpu_env, int dirfd, const char *pathname, int flags, return fd; } - return sys_openat(dirfd, path(pathname), flags, mode); + return safe_openat(dirfd, path(pathname), flags, mode); } #define TIMER_MAGIC 0x0caf0000 |