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authorJeff Dike <jdike@addtoit.com>2008-02-04 22:31:04 -0800
committerLinus Torvalds <torvalds@woody.linux-foundation.org>2008-02-05 09:44:29 -0800
commitbf8fde785b872282e7e86d9ea8a9c4e543985bb3 (patch)
treecb813edfbb04c8474caab0f8a26a8512a503cf82
parent7b5cc6ee6cf9001775c348bac09814a45f1276b7 (diff)
uml: miscellaneous code cleanups
Code tidying - the pid field of struct irq_fd isn't used, so it is removed os_set_fd_async needed to read flags before changing them, it doesn't need a pid passed in because it can call getpid itself, and a block of unused code needed deleting os_get_exec_close was unused, so it is removed ptrace_child called _exit for historical reasons which are no longer valid, so just calls exit instead Signed-off-by: Jeff Dike <jdike@linux.intel.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
-rw-r--r--arch/um/include/irq_user.h1
-rw-r--r--arch/um/include/os.h3
-rw-r--r--arch/um/kernel/irq.c6
-rw-r--r--arch/um/kernel/ksyms.c1
-rw-r--r--arch/um/kernel/smp.c6
-rw-r--r--arch/um/os-Linux/file.c38
-rw-r--r--arch/um/os-Linux/start_up.c3
7 files changed, 18 insertions, 40 deletions
diff --git a/arch/um/include/irq_user.h b/arch/um/include/irq_user.h
index 884a9c17eea0..e60b31873de1 100644
--- a/arch/um/include/irq_user.h
+++ b/arch/um/include/irq_user.h
@@ -14,7 +14,6 @@ struct irq_fd {
int fd;
int type;
int irq;
- int pid;
int events;
int current_events;
};
diff --git a/arch/um/include/os.h b/arch/um/include/os.h
index 9428d34792ca..fdac1a55d031 100644
--- a/arch/um/include/os.h
+++ b/arch/um/include/os.h
@@ -127,7 +127,6 @@ static inline struct openflags of_cloexec(struct openflags flags)
extern int os_stat_file(const char *file_name, struct uml_stat *buf);
extern int os_stat_fd(const int fd, struct uml_stat *buf);
extern int os_access(const char *file, int mode);
-extern int os_get_exec_close(int fd, int *close_on_exec);
extern int os_set_exec_close(int fd);
extern int os_ioctl_generic(int fd, unsigned int cmd, unsigned long arg);
extern int os_get_ifname(int fd, char *namebuf);
@@ -142,7 +141,7 @@ extern int os_write_file(int fd, const void *buf, int count);
extern int os_file_size(const char *file, unsigned long long *size_out);
extern int os_file_modtime(const char *file, unsigned long *modtime);
extern int os_pipe(int *fd, int stream, int close_on_exec);
-extern int os_set_fd_async(int fd, int owner);
+extern int os_set_fd_async(int fd);
extern int os_clear_fd_async(int fd);
extern int os_set_fd_block(int fd, int blocking);
extern int os_accept_connection(int fd);
diff --git a/arch/um/kernel/irq.c b/arch/um/kernel/irq.c
index ba11ccd6a8a3..91587f8db340 100644
--- a/arch/um/kernel/irq.c
+++ b/arch/um/kernel/irq.c
@@ -107,10 +107,9 @@ int activate_fd(int irq, int fd, int type, void *dev_id)
struct pollfd *tmp_pfd;
struct irq_fd *new_fd, *irq_fd;
unsigned long flags;
- int pid, events, err, n;
+ int events, err, n;
- pid = os_getpid();
- err = os_set_fd_async(fd, pid);
+ err = os_set_fd_async(fd);
if (err < 0)
goto out;
@@ -127,7 +126,6 @@ int activate_fd(int irq, int fd, int type, void *dev_id)
.fd = fd,
.type = type,
.irq = irq,
- .pid = pid,
.events = events,
.current_events = 0 } );
diff --git a/arch/um/kernel/ksyms.c b/arch/um/kernel/ksyms.c
index 187a756f3e5b..5311ee93ede3 100644
--- a/arch/um/kernel/ksyms.c
+++ b/arch/um/kernel/ksyms.c
@@ -36,7 +36,6 @@ EXPORT_SYMBOL(uml_strdup);
EXPORT_SYMBOL(os_stat_fd);
EXPORT_SYMBOL(os_stat_file);
EXPORT_SYMBOL(os_access);
-EXPORT_SYMBOL(os_get_exec_close);
EXPORT_SYMBOL(os_set_exec_close);
EXPORT_SYMBOL(os_getpid);
EXPORT_SYMBOL(os_open_file);
diff --git a/arch/um/kernel/smp.c b/arch/um/kernel/smp.c
index a12e5bd15790..869ac6802209 100644
--- a/arch/um/kernel/smp.c
+++ b/arch/um/kernel/smp.c
@@ -74,8 +74,7 @@ static int idle_proc(void *cpup)
if (err < 0)
panic("CPU#%d failed to create IPI pipe, err = %d", cpu, -err);
- os_set_fd_async(cpu_data[cpu].ipi_pipe[0],
- current->thread.mode.tt.extern_pid);
+ os_set_fd_async(cpu_data[cpu].ipi_pipe[0]);
wmb();
if (cpu_test_and_set(cpu, cpu_callin_map)) {
@@ -128,8 +127,7 @@ void smp_prepare_cpus(unsigned int maxcpus)
if (err < 0)
panic("CPU#0 failed to create IPI pipe, errno = %d", -err);
- os_set_fd_async(cpu_data[me].ipi_pipe[0],
- current->thread.mode.tt.extern_pid);
+ os_set_fd_async(cpu_data[me].ipi_pipe[0]);
for (cpu = 1; cpu < ncpus; cpu++) {
printk(KERN_INFO "Booting processor %d...\n", cpu);
diff --git a/arch/um/os-Linux/file.c b/arch/um/os-Linux/file.c
index 9387cb11c0ad..4f547d75b17e 100644
--- a/arch/um/os-Linux/file.c
+++ b/arch/um/os-Linux/file.c
@@ -328,19 +328,6 @@ int os_file_modtime(const char *file, unsigned long *modtime)
return 0;
}
-int os_get_exec_close(int fd, int *close_on_exec)
-{
- int ret;
-
- CATCH_EINTR(ret = fcntl(fd, F_GETFD));
-
- if(ret < 0)
- return -errno;
-
- *close_on_exec = (ret & FD_CLOEXEC) ? 1 : 0;
- return ret;
-}
-
int os_set_exec_close(int fd)
{
int err;
@@ -380,30 +367,27 @@ int os_pipe(int *fds, int stream, int close_on_exec)
return err;
}
-int os_set_fd_async(int fd, int owner)
+int os_set_fd_async(int fd)
{
- int err;
+ int err, flags;
+
+ flags = fcntl(fd, F_GETFL);
+ if (flags < 0)
+ return -errno;
- /* XXX This should do F_GETFL first */
- if(fcntl(fd, F_SETFL, O_ASYNC | O_NONBLOCK) < 0){
+ flags |= O_ASYNC | O_NONBLOCK;
+ if (fcntl(fd, F_SETFL, flags) < 0) {
err = -errno;
printk("os_set_fd_async : failed to set O_ASYNC and "
"O_NONBLOCK on fd # %d, errno = %d\n", fd, errno);
return err;
}
-#ifdef notdef
- if(fcntl(fd, F_SETFD, 1) < 0){
- printk("os_set_fd_async : Setting FD_CLOEXEC failed, "
- "errno = %d\n", errno);
- }
-#endif
- if((fcntl(fd, F_SETSIG, SIGIO) < 0) ||
- (fcntl(fd, F_SETOWN, owner) < 0)){
+ if ((fcntl(fd, F_SETSIG, SIGIO) < 0) ||
+ (fcntl(fd, F_SETOWN, os_getpid()) < 0)) {
err = -errno;
printk("os_set_fd_async : Failed to fcntl F_SETOWN "
- "(or F_SETSIG) fd %d to pid %d, errno = %d\n", fd,
- owner, errno);
+ "(or F_SETSIG) fd %d, errno = %d\n", fd, errno);
return err;
}
diff --git a/arch/um/os-Linux/start_up.c b/arch/um/os-Linux/start_up.c
index 6d56d15884fd..bcf0c9b86b10 100644
--- a/arch/um/os-Linux/start_up.c
+++ b/arch/um/os-Linux/start_up.c
@@ -60,7 +60,8 @@ static int ptrace_child(void)
* the UML code itself.
*/
ret = 2;
- _exit(ret);
+
+ exit(ret);
}
static void fatal_perror(const char *str)