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lc->in->f_op->read expects its buffer to be in userspace so surround it in

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set_fs() etc calls
This commit is contained in:
Patrick Caulfield 2001-09-14 12:27:57 +00:00
parent 15405b1119
commit e69ea529cc
1 changed files with 7 additions and 1 deletions
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8
driver/device-mapper/dm-fs.c
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@ -66,9 +66,15 @@ int extract_line(struct text_region *line, void *private)
ssize_t n;
loff_t off = lc->next_read;
const char *read_begin;
mm_segment_t fs;
fs = get_fs();
set_fs(get_ds());
n = lc->in->f_op->read(lc->in, lc->data, sizeof(lc->data), &off);
set_fs(fs);
if (n <= 0)
return 0;
@ -95,7 +101,7 @@ static struct file *open_error_file(struct file *table)
return 0;
/* FIXME: Assumes path depth; avoid filp_open. */
sprintf(name, "/%s/%s/%s.err",
sprintf(name, "/%s/%s/%s.err",
table->f_vfsmnt->mnt_mountpoint->d_name.name,
table->f_dentry->d_parent->d_name.name,
table->f_dentry->d_name.name);