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fs: fix kernel_write prototype

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Make the position an in/out argument like all the other read/write
helpers and and make the buf argument a void pointer.

Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
This commit is contained in:
Christoph Hellwig 2017-09-01 17:39:14 +02:00 committed by Al Viro
parent bdd1d2d3d2
commit e13ec939e9
9 changed files with 19 additions and 13 deletions
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2
drivers/mtd/nand/nandsim.c
View File

@ -1395,7 +1395,7 @@ static ssize_t write_file(struct nandsim *ns, struct file *file, void *buf, size
if (err)
return err;
noreclaim_flag = memalloc_noreclaim_save();
tx = kernel_write(file, buf, count, pos);
tx = kernel_write(file, buf, count, &pos);
memalloc_noreclaim_restore(noreclaim_flag);
put_pages(ns);
return tx;

3
drivers/target/target_core_alua.c
View File

@ -896,13 +896,14 @@ static int core_alua_write_tpg_metadata(
u32 md_buf_len)
{
struct file *file = filp_open(path, O_RDWR | O_CREAT | O_TRUNC, 0600);
loff_t pos = 0;
int ret;
if (IS_ERR(file)) {
pr_err("filp_open(%s) for ALUA metadata failed\n", path);
return -ENODEV;
}
ret = kernel_write(file, md_buf, md_buf_len, 0);
ret = kernel_write(file, md_buf, md_buf_len, &pos);
if (ret < 0)
pr_err("Error writing ALUA metadata file: %s\n", path);
fput(file);

2
drivers/target/target_core_file.c
View File

@ -443,7 +443,7 @@ fd_do_prot_fill(struct se_device *se_dev, sector_t lba, sector_t nolb,
for (prot = 0; prot < prot_length;) {
sector_t len = min_t(sector_t, bufsize, prot_length - prot);
ssize_t ret = kernel_write(prot_fd, buf, len, pos + prot);
ssize_t ret = kernel_write(prot_fd, buf, len, &pos);
if (ret != len) {
pr_err("vfs_write to prot file failed: %zd\n", ret);

3
drivers/target/target_core_pr.c
View File

@ -1974,6 +1974,7 @@ static int __core_scsi3_write_aptpl_to_file(
char path[512];
u32 pr_aptpl_buf_len;
int ret;
loff_t pos = 0;
memset(path, 0, 512);
@ -1993,7 +1994,7 @@ static int __core_scsi3_write_aptpl_to_file(
pr_aptpl_buf_len = (strlen(buf) + 1); /* Add extra for NULL */
ret = kernel_write(file, buf, pr_aptpl_buf_len, 0);
ret = kernel_write(file, buf, pr_aptpl_buf_len, &pos);
if (ret < 0)
pr_debug("Error writing APTPL metadata file: %s\n", path);

2
fs/ecryptfs/read_write.c
View File

@ -47,7 +47,7 @@ int ecryptfs_write_lower(struct inode *ecryptfs_inode, char *data,
lower_file = ecryptfs_inode_to_private(ecryptfs_inode)->lower_file;
if (!lower_file)
return -EIO;
rc = kernel_write(lower_file, data, size, offset);
rc = kernel_write(lower_file, data, size, &offset);
mark_inode_dirty_sync(ecryptfs_inode);
return rc;
}

6
fs/read_write.c
View File

@ -512,8 +512,8 @@ ssize_t __kernel_write(struct file *file, const char *buf, size_t count, loff_t
}
EXPORT_SYMBOL(__kernel_write);
ssize_t kernel_write(struct file *file, const char *buf, size_t count,
loff_t pos)
ssize_t kernel_write(struct file *file, const void *buf, size_t count,
loff_t *pos)
{
mm_segment_t old_fs;
ssize_t res;
@ -521,7 +521,7 @@ ssize_t kernel_write(struct file *file, const char *buf, size_t count,
old_fs = get_fs();
set_fs(get_ds());
/* The cast to a user pointer is valid due to the set_fs() */
res = vfs_write(file, (__force const char __user *)buf, count, &pos);
res = vfs_write(file, (__force const char __user *)buf, count, pos);
set_fs(old_fs);
return res;

2
include/linux/fs.h
View File

@ -2779,7 +2779,7 @@ extern int kernel_read_file_from_path(char *, void **, loff_t *, loff_t,
extern int kernel_read_file_from_fd(int, void **, loff_t *, loff_t,
enum kernel_read_file_id);
extern ssize_t kernel_read(struct file *, void *, size_t, loff_t *);
extern ssize_t kernel_write(struct file *, const char *, size_t, loff_t);
extern ssize_t kernel_write(struct file *, const void *, size_t, loff_t *);
extern ssize_t __kernel_write(struct file *, const char *, size_t, loff_t *);
extern struct file * open_exec(const char *);

9
kernel/sysctl_binary.c
View File

@ -1017,6 +1017,7 @@ static ssize_t bin_intvec(struct file *file,
size_t length = newlen / sizeof(*vec);
char *str, *end;
int i;
loff_t pos = 0;
str = buffer;
end = str + BUFSZ;
@ -1030,7 +1031,7 @@ static ssize_t bin_intvec(struct file *file,
str += scnprintf(str, end - str, "%lu\t", value);
}
result = kernel_write(file, buffer, str - buffer, 0);
result = kernel_write(file, buffer, str - buffer, &pos);
if (result < 0)
goto out_kfree;
}
@ -1089,6 +1090,7 @@ static ssize_t bin_ulongvec(struct file *file,
size_t length = newlen / sizeof(*vec);
char *str, *end;
int i;
loff_t pos = 0;
str = buffer;
end = str + BUFSZ;
@ -1102,7 +1104,7 @@ static ssize_t bin_ulongvec(struct file *file,
str += scnprintf(str, end - str, "%lu\t", value);
}
result = kernel_write(file, buffer, str - buffer, 0);
result = kernel_write(file, buffer, str - buffer, &pos);
if (result < 0)
goto out_kfree;
}
@ -1192,6 +1194,7 @@ static ssize_t bin_dn_node_address(struct file *file,
__le16 dnaddr;
char buf[15];
int len;
loff_t pos = 0;
result = -EINVAL;
if (newlen != sizeof(dnaddr))
@ -1205,7 +1208,7 @@ static ssize_t bin_dn_node_address(struct file *file,
le16_to_cpu(dnaddr) >> 10,
le16_to_cpu(dnaddr) & 0x3ff);
result = kernel_write(file, buf, len, 0);
result = kernel_write(file, buf, len, &pos);
if (result < 0)
goto out;
}

3
security/keys/big_key.c
View File

@ -147,6 +147,7 @@ int big_key_preparse(struct key_preparsed_payload *prep)
* File content is stored encrypted with randomly generated key.
*/
size_t enclen = ALIGN(datalen, crypto_skcipher_blocksize(big_key_skcipher));
loff_t pos = 0;
/* prepare aligned data to encrypt */
data = kmalloc(enclen, GFP_KERNEL);
@ -179,7 +180,7 @@ int big_key_preparse(struct key_preparsed_payload *prep)
goto err_enckey;
}
written = kernel_write(file, data, enclen, 0);
written = kernel_write(file, data, enclen, &pos);
if (written != enclen) {
ret = written;
if (written >= 0)