mirror of
https://github.com/team-infusion-developers/android_kernel_samsung_msm8976.git
synced 2024-10-31 18:09:19 +00:00
export kernel_write(), convert open-coded instances
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
This commit is contained in:
parent
94e07a7590
commit
7bb307e894
5 changed files with 24 additions and 61 deletions
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@ -1408,40 +1408,32 @@ static void clear_memalloc(int memalloc)
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current->flags &= ~PF_MEMALLOC;
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}
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static ssize_t read_file(struct nandsim *ns, struct file *file, void *buf, size_t count, loff_t *pos)
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static ssize_t read_file(struct nandsim *ns, struct file *file, void *buf, size_t count, loff_t pos)
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{
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mm_segment_t old_fs;
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ssize_t tx;
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int err, memalloc;
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err = get_pages(ns, file, count, *pos);
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err = get_pages(ns, file, count, pos);
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if (err)
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return err;
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old_fs = get_fs();
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set_fs(get_ds());
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memalloc = set_memalloc();
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tx = vfs_read(file, (char __user *)buf, count, pos);
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tx = kernel_read(file, pos, buf, count);
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clear_memalloc(memalloc);
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set_fs(old_fs);
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put_pages(ns);
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return tx;
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}
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static ssize_t write_file(struct nandsim *ns, struct file *file, void *buf, size_t count, loff_t *pos)
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static ssize_t write_file(struct nandsim *ns, struct file *file, void *buf, size_t count, loff_t pos)
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{
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mm_segment_t old_fs;
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ssize_t tx;
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int err, memalloc;
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err = get_pages(ns, file, count, *pos);
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err = get_pages(ns, file, count, pos);
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if (err)
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return err;
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old_fs = get_fs();
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set_fs(get_ds());
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memalloc = set_memalloc();
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tx = vfs_write(file, (char __user *)buf, count, pos);
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tx = kernel_write(file, buf, count, pos);
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clear_memalloc(memalloc);
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set_fs(old_fs);
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put_pages(ns);
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return tx;
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}
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@ -1511,7 +1503,7 @@ static void read_page(struct nandsim *ns, int num)
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if (do_read_error(ns, num))
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return;
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pos = (loff_t)ns->regs.row * ns->geom.pgszoob + ns->regs.column + ns->regs.off;
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tx = read_file(ns, ns->cfile, ns->buf.byte, num, &pos);
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tx = read_file(ns, ns->cfile, ns->buf.byte, num, pos);
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if (tx != num) {
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NS_ERR("read_page: read error for page %d ret %ld\n", ns->regs.row, (long)tx);
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return;
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@ -1573,7 +1565,7 @@ static int prog_page(struct nandsim *ns, int num)
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u_char *pg_off;
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if (ns->cfile) {
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loff_t off, pos;
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loff_t off;
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ssize_t tx;
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int all;
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@ -1585,8 +1577,7 @@ static int prog_page(struct nandsim *ns, int num)
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memset(ns->file_buf, 0xff, ns->geom.pgszoob);
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} else {
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all = 0;
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pos = off;
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tx = read_file(ns, ns->cfile, pg_off, num, &pos);
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tx = read_file(ns, ns->cfile, pg_off, num, off);
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if (tx != num) {
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NS_ERR("prog_page: read error for page %d ret %ld\n", ns->regs.row, (long)tx);
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return -1;
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@ -1595,16 +1586,15 @@ static int prog_page(struct nandsim *ns, int num)
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for (i = 0; i < num; i++)
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pg_off[i] &= ns->buf.byte[i];
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if (all) {
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pos = (loff_t)ns->regs.row * ns->geom.pgszoob;
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tx = write_file(ns, ns->cfile, ns->file_buf, ns->geom.pgszoob, &pos);
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loff_t pos = (loff_t)ns->regs.row * ns->geom.pgszoob;
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tx = write_file(ns, ns->cfile, ns->file_buf, ns->geom.pgszoob, pos);
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if (tx != ns->geom.pgszoob) {
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NS_ERR("prog_page: write error for page %d ret %ld\n", ns->regs.row, (long)tx);
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return -1;
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}
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ns->pages_written[ns->regs.row] = 1;
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} else {
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pos = off;
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tx = write_file(ns, ns->cfile, pg_off, num, &pos);
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tx = write_file(ns, ns->cfile, pg_off, num, off);
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if (tx != num) {
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NS_ERR("prog_page: write error for page %d ret %ld\n", ns->regs.row, (long)tx);
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return -1;
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@ -40,16 +40,12 @@ int ecryptfs_write_lower(struct inode *ecryptfs_inode, char *data,
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loff_t offset, size_t size)
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{
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struct file *lower_file;
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mm_segment_t fs_save;
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ssize_t rc;
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lower_file = ecryptfs_inode_to_private(ecryptfs_inode)->lower_file;
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if (!lower_file)
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return -EIO;
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fs_save = get_fs();
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set_fs(get_ds());
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rc = vfs_write(lower_file, data, size, &offset);
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set_fs(fs_save);
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rc = kernel_write(lower_file, data, size, offset);
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mark_inode_dirty_sync(ecryptfs_inode);
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return rc;
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}
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@ -569,7 +569,7 @@ static ssize_t kernel_readv(struct file *file, const struct iovec *vec,
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return res;
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}
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static ssize_t kernel_write(struct file *file, const char *buf, size_t count,
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ssize_t kernel_write(struct file *file, const char *buf, size_t count,
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loff_t pos)
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{
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mm_segment_t old_fs;
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@ -578,11 +578,12 @@ static ssize_t kernel_write(struct file *file, const char *buf, size_t count,
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old_fs = get_fs();
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set_fs(get_ds());
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/* The cast to a user pointer is valid due to the set_fs() */
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res = vfs_write(file, (const char __user *)buf, count, &pos);
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res = vfs_write(file, (__force const char __user *)buf, count, &pos);
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set_fs(old_fs);
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return res;
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}
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EXPORT_SYMBOL(kernel_write);
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ssize_t default_file_splice_read(struct file *in, loff_t *ppos,
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struct pipe_inode_info *pipe, size_t len,
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@ -2277,6 +2277,7 @@ static inline void i_readcount_inc(struct inode *inode)
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extern int do_pipe_flags(int *, int);
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extern int kernel_read(struct file *, loff_t, char *, unsigned long);
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extern ssize_t kernel_write(struct file *, const char *, size_t, loff_t);
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extern struct file * open_exec(const char *);
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/* fs/dcache.c -- generic fs support functions */
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@ -971,7 +971,6 @@ out:
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static ssize_t bin_intvec(struct file *file,
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void __user *oldval, size_t oldlen, void __user *newval, size_t newlen)
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{
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mm_segment_t old_fs = get_fs();
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ssize_t copied = 0;
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char *buffer;
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ssize_t result;
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@ -984,13 +983,10 @@ static ssize_t bin_intvec(struct file *file,
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if (oldval && oldlen) {
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unsigned __user *vec = oldval;
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size_t length = oldlen / sizeof(*vec);
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loff_t pos = 0;
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char *str, *end;
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int i;
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set_fs(KERNEL_DS);
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result = vfs_read(file, buffer, BUFSZ - 1, &pos);
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set_fs(old_fs);
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result = kernel_read(file, 0, buffer, BUFSZ - 1);
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if (result < 0)
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goto out_kfree;
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@ -1017,7 +1013,6 @@ static ssize_t bin_intvec(struct file *file,
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if (newval && newlen) {
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unsigned __user *vec = newval;
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size_t length = newlen / sizeof(*vec);
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loff_t pos = 0;
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char *str, *end;
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int i;
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@ -1033,9 +1028,7 @@ static ssize_t bin_intvec(struct file *file,
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str += snprintf(str, end - str, "%lu\t", value);
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}
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set_fs(KERNEL_DS);
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result = vfs_write(file, buffer, str - buffer, &pos);
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set_fs(old_fs);
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result = kernel_write(file, buffer, str - buffer, 0);
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if (result < 0)
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goto out_kfree;
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}
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@ -1049,7 +1042,6 @@ out:
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static ssize_t bin_ulongvec(struct file *file,
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void __user *oldval, size_t oldlen, void __user *newval, size_t newlen)
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{
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mm_segment_t old_fs = get_fs();
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ssize_t copied = 0;
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char *buffer;
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ssize_t result;
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@ -1062,13 +1054,10 @@ static ssize_t bin_ulongvec(struct file *file,
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if (oldval && oldlen) {
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unsigned long __user *vec = oldval;
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size_t length = oldlen / sizeof(*vec);
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loff_t pos = 0;
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char *str, *end;
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int i;
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set_fs(KERNEL_DS);
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result = vfs_read(file, buffer, BUFSZ - 1, &pos);
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set_fs(old_fs);
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result = kernel_read(file, 0, buffer, BUFSZ - 1);
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if (result < 0)
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goto out_kfree;
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if (newval && newlen) {
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unsigned long __user *vec = newval;
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size_t length = newlen / sizeof(*vec);
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loff_t pos = 0;
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char *str, *end;
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int i;
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@ -1111,9 +1099,7 @@ static ssize_t bin_ulongvec(struct file *file,
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str += snprintf(str, end - str, "%lu\t", value);
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}
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set_fs(KERNEL_DS);
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result = vfs_write(file, buffer, str - buffer, &pos);
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set_fs(old_fs);
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result = kernel_write(file, buffer, str - buffer, 0);
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if (result < 0)
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goto out_kfree;
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}
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@ -1127,19 +1113,15 @@ out:
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static ssize_t bin_uuid(struct file *file,
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void __user *oldval, size_t oldlen, void __user *newval, size_t newlen)
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{
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mm_segment_t old_fs = get_fs();
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ssize_t result, copied = 0;
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/* Only supports reads */
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if (oldval && oldlen) {
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loff_t pos = 0;
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char buf[40], *str = buf;
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unsigned char uuid[16];
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int i;
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set_fs(KERNEL_DS);
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result = vfs_read(file, buf, sizeof(buf) - 1, &pos);
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set_fs(old_fs);
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result = kernel_read(file, 0, buf, sizeof(buf) - 1);
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if (result < 0)
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goto out;
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@ -1175,18 +1157,14 @@ out:
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static ssize_t bin_dn_node_address(struct file *file,
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void __user *oldval, size_t oldlen, void __user *newval, size_t newlen)
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{
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mm_segment_t old_fs = get_fs();
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ssize_t result, copied = 0;
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if (oldval && oldlen) {
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loff_t pos = 0;
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char buf[15], *nodep;
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unsigned long area, node;
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__le16 dnaddr;
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set_fs(KERNEL_DS);
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result = vfs_read(file, buf, sizeof(buf) - 1, &pos);
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set_fs(old_fs);
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result = kernel_read(file, 0, buf, sizeof(buf) - 1);
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if (result < 0)
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goto out;
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@ -1215,7 +1193,6 @@ static ssize_t bin_dn_node_address(struct file *file,
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}
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if (newval && newlen) {
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loff_t pos = 0;
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__le16 dnaddr;
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char buf[15];
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int len;
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le16_to_cpu(dnaddr) >> 10,
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le16_to_cpu(dnaddr) & 0x3ff);
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set_fs(KERNEL_DS);
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result = vfs_write(file, buf, len, &pos);
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set_fs(old_fs);
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result = kernel_write(file, buf, len, 0);
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if (result < 0)
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goto out;
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}
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