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authorAl Viro <viro@zeniv.linux.org.uk>2013-02-23 19:51:48 (GMT)
committerAl Viro <viro@zeniv.linux.org.uk>2013-02-26 07:46:11 (GMT)
commit7bb307e894d51308aa0582a8c4cc5875bbc645b9 (patch)
tree8b8434fe4674fb47236c0d7ca2256e7afc29f208 /kernel/sysctl_binary.c
parent94e07a7590ae855bae0536c42b3086fadc7c83a8 (diff)
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export kernel_write(), convert open-coded instances
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Diffstat (limited to 'kernel/sysctl_binary.c')
-rw-r--r--kernel/sysctl_binary.c39
1 files changed, 7 insertions, 32 deletions
diff --git a/kernel/sysctl_binary.c b/kernel/sysctl_binary.c
index 5a63844..37f240f 100644
--- a/kernel/sysctl_binary.c
+++ b/kernel/sysctl_binary.c
@@ -971,7 +971,6 @@ out:
static ssize_t bin_intvec(struct file *file,
void __user *oldval, size_t oldlen, void __user *newval, size_t newlen)
{
- mm_segment_t old_fs = get_fs();
ssize_t copied = 0;
char *buffer;
ssize_t result;
@@ -984,13 +983,10 @@ static ssize_t bin_intvec(struct file *file,
if (oldval && oldlen) {
unsigned __user *vec = oldval;
size_t length = oldlen / sizeof(*vec);
- loff_t pos = 0;
char *str, *end;
int i;
- set_fs(KERNEL_DS);
- result = vfs_read(file, buffer, BUFSZ - 1, &pos);
- set_fs(old_fs);
+ result = kernel_read(file, 0, buffer, BUFSZ - 1);
if (result < 0)
goto out_kfree;
@@ -1017,7 +1013,6 @@ static ssize_t bin_intvec(struct file *file,
if (newval && newlen) {
unsigned __user *vec = newval;
size_t length = newlen / sizeof(*vec);
- loff_t pos = 0;
char *str, *end;
int i;
@@ -1033,9 +1028,7 @@ static ssize_t bin_intvec(struct file *file,
str += snprintf(str, end - str, "%lu\t", value);
}
- set_fs(KERNEL_DS);
- result = vfs_write(file, buffer, str - buffer, &pos);
- set_fs(old_fs);
+ result = kernel_write(file, buffer, str - buffer, 0);
if (result < 0)
goto out_kfree;
}
@@ -1049,7 +1042,6 @@ out:
static ssize_t bin_ulongvec(struct file *file,
void __user *oldval, size_t oldlen, void __user *newval, size_t newlen)
{
- mm_segment_t old_fs = get_fs();
ssize_t copied = 0;
char *buffer;
ssize_t result;
@@ -1062,13 +1054,10 @@ static ssize_t bin_ulongvec(struct file *file,
if (oldval && oldlen) {
unsigned long __user *vec = oldval;
size_t length = oldlen / sizeof(*vec);
- loff_t pos = 0;
char *str, *end;
int i;
- set_fs(KERNEL_DS);
- result = vfs_read(file, buffer, BUFSZ - 1, &pos);
- set_fs(old_fs);
+ result = kernel_read(file, 0, buffer, BUFSZ - 1);
if (result < 0)
goto out_kfree;
@@ -1095,7 +1084,6 @@ static ssize_t bin_ulongvec(struct file *file,
if (newval && newlen) {
unsigned long __user *vec = newval;
size_t length = newlen / sizeof(*vec);
- loff_t pos = 0;
char *str, *end;
int i;
@@ -1111,9 +1099,7 @@ static ssize_t bin_ulongvec(struct file *file,
str += snprintf(str, end - str, "%lu\t", value);
}
- set_fs(KERNEL_DS);
- result = vfs_write(file, buffer, str - buffer, &pos);
- set_fs(old_fs);
+ result = kernel_write(file, buffer, str - buffer, 0);
if (result < 0)
goto out_kfree;
}
@@ -1127,19 +1113,15 @@ out:
static ssize_t bin_uuid(struct file *file,
void __user *oldval, size_t oldlen, void __user *newval, size_t newlen)
{
- mm_segment_t old_fs = get_fs();
ssize_t result, copied = 0;
/* Only supports reads */
if (oldval && oldlen) {
- loff_t pos = 0;
char buf[40], *str = buf;
unsigned char uuid[16];
int i;
- set_fs(KERNEL_DS);
- result = vfs_read(file, buf, sizeof(buf) - 1, &pos);
- set_fs(old_fs);
+ result = kernel_read(file, 0, buf, sizeof(buf) - 1);
if (result < 0)
goto out;
@@ -1175,18 +1157,14 @@ out:
static ssize_t bin_dn_node_address(struct file *file,
void __user *oldval, size_t oldlen, void __user *newval, size_t newlen)
{
- mm_segment_t old_fs = get_fs();
ssize_t result, copied = 0;
if (oldval && oldlen) {
- loff_t pos = 0;
char buf[15], *nodep;
unsigned long area, node;
__le16 dnaddr;
- set_fs(KERNEL_DS);
- result = vfs_read(file, buf, sizeof(buf) - 1, &pos);
- set_fs(old_fs);
+ result = kernel_read(file, 0, buf, sizeof(buf) - 1);
if (result < 0)
goto out;
@@ -1215,7 +1193,6 @@ static ssize_t bin_dn_node_address(struct file *file,
}
if (newval && newlen) {
- loff_t pos = 0;
__le16 dnaddr;
char buf[15];
int len;
@@ -1232,9 +1209,7 @@ static ssize_t bin_dn_node_address(struct file *file,
le16_to_cpu(dnaddr) >> 10,
le16_to_cpu(dnaddr) & 0x3ff);
- set_fs(KERNEL_DS);
- result = vfs_write(file, buf, len, &pos);
- set_fs(old_fs);
+ result = kernel_write(file, buf, len, 0);
if (result < 0)
goto out;
}