uml: code tidying under arch/um/os-Linux

This patch contains varied fixes and improvements for some files under
arch/um/os-Linux/, such as a typo fix in a perror message, a missing
argument fix for a printf, some constifying for pointers and so on.

[ jdike - made sigprocmask failure return -errno instead of -1 ]

Signed-off-by: WANG Cong <xiyou.wangcong@gmail.com>
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>

1 files changed, 7 insertions, 7 deletions

diff --git a/arch/um/os-Linux/file.c b/arch/um/os-Linux/file.c
index f83462758627..c3bb5ce70c95 100644
--- a/arch/um/os-Linux/file.c
+++ b/arch/um/os-Linux/file.c
@@ -19,7 +19,7 @@
 #include "user.h"
 #include "kern_util.h"
 
-static void copy_stat(struct uml_stat *dst, struct stat64 *src)
+static void copy_stat(struct uml_stat *dst, const struct stat64 *src)
 {
         *dst = ((struct uml_stat) {
                 .ust_dev     = src->st_dev,     /* device */
@@ -168,7 +168,7 @@ int os_file_type(char *file)
         else return OS_TYPE_FILE;
 }
 
-int os_file_mode(char *file, struct openflags *mode_out)
+int os_file_mode(const char *file, struct openflags *mode_out)
 {
         int err;
 
@@ -189,7 +189,7 @@ int os_file_mode(char *file, struct openflags *mode_out)
         return err;
 }
 
-int os_open_file(char *file, struct openflags flags, int mode)
+int os_open_file(const char *file, struct openflags flags, int mode)
 {
         int fd, err, f = 0;
 
@@ -216,7 +216,7 @@ int os_open_file(char *file, struct openflags flags, int mode)
         return fd;
 }
 
-int os_connect_socket(char *name)
+int os_connect_socket(const char *name)
 {
         struct sockaddr_un sock;
         int fd, err;
@@ -277,7 +277,7 @@ int os_write_file(int fd, const void *buf, int len)
         return n;
 }
 
-int os_file_size(char *file, unsigned long long *size_out)
+int os_file_size(const char *file, unsigned long long *size_out)
 {
         struct uml_stat buf;
         int err;
@@ -314,7 +314,7 @@ int os_file_size(char *file, unsigned long long *size_out)
         return 0;
 }
 
-int os_file_modtime(char *file, unsigned long *modtime)
+int os_file_modtime(const char *file, unsigned long *modtime)
 {
         struct uml_stat buf;
         int err;
@@ -514,7 +514,7 @@ int os_rcv_fd(int fd, int *helper_pid_out)
         return new;
 }
 
-int os_create_unix_socket(char *file, int len, int close_on_exec)
+int os_create_unix_socket(const char *file, int len, int close_on_exec)
 {
         struct sockaddr_un addr;
         int sock, err;