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-rw-r--r--fs/file.c42
1 files changed, 25 insertions, 17 deletions
diff --git a/fs/file.c b/fs/file.c
index 92b5f25985d..f5926ce73f3 100644
--- a/fs/file.c
+++ b/fs/file.c
@@ -59,13 +59,15 @@ static int expand_fd_array(struct files_struct *files, int nr)
{
struct file **new_fds;
int error, nfds;
+ struct fdtable *fdt;
error = -EMFILE;
- if (files->max_fds >= NR_OPEN || nr >= NR_OPEN)
+ fdt = files_fdtable(files);
+ if (fdt->max_fds >= NR_OPEN || nr >= NR_OPEN)
goto out;
- nfds = files->max_fds;
+ nfds = fdt->max_fds;
spin_unlock(&files->file_lock);
/*
@@ -95,13 +97,14 @@ static int expand_fd_array(struct files_struct *files, int nr)
goto out;
/* Copy the existing array and install the new pointer */
+ fdt = files_fdtable(files);
- if (nfds > files->max_fds) {
+ if (nfds > fdt->max_fds) {
struct file **old_fds;
int i;
- old_fds = xchg(&files->fd, new_fds);
- i = xchg(&files->max_fds, nfds);
+ old_fds = xchg(&fdt->fd, new_fds);
+ i = xchg(&fdt->max_fds, nfds);
/* Don't copy/clear the array if we are creating a new
fd array for fork() */
@@ -164,12 +167,14 @@ static int expand_fdset(struct files_struct *files, int nr)
{
fd_set *new_openset = NULL, *new_execset = NULL;
int error, nfds = 0;
+ struct fdtable *fdt;
error = -EMFILE;
- if (files->max_fdset >= NR_OPEN || nr >= NR_OPEN)
+ fdt = files_fdtable(files);
+ if (fdt->max_fdset >= NR_OPEN || nr >= NR_OPEN)
goto out;
- nfds = files->max_fdset;
+ nfds = fdt->max_fdset;
spin_unlock(&files->file_lock);
/* Expand to the max in easy steps */
@@ -193,24 +198,25 @@ static int expand_fdset(struct files_struct *files, int nr)
error = 0;
/* Copy the existing tables and install the new pointers */
- if (nfds > files->max_fdset) {
- int i = files->max_fdset / (sizeof(unsigned long) * 8);
- int count = (nfds - files->max_fdset) / 8;
+ fdt = files_fdtable(files);
+ if (nfds > fdt->max_fdset) {
+ int i = fdt->max_fdset / (sizeof(unsigned long) * 8);
+ int count = (nfds - fdt->max_fdset) / 8;
/*
* Don't copy the entire array if the current fdset is
* not yet initialised.
*/
if (i) {
- memcpy (new_openset, files->open_fds, files->max_fdset/8);
- memcpy (new_execset, files->close_on_exec, files->max_fdset/8);
+ memcpy (new_openset, fdt->open_fds, fdt->max_fdset/8);
+ memcpy (new_execset, fdt->close_on_exec, fdt->max_fdset/8);
memset (&new_openset->fds_bits[i], 0, count);
memset (&new_execset->fds_bits[i], 0, count);
}
- nfds = xchg(&files->max_fdset, nfds);
- new_openset = xchg(&files->open_fds, new_openset);
- new_execset = xchg(&files->close_on_exec, new_execset);
+ nfds = xchg(&fdt->max_fdset, nfds);
+ new_openset = xchg(&fdt->open_fds, new_openset);
+ new_execset = xchg(&fdt->close_on_exec, new_execset);
spin_unlock(&files->file_lock);
free_fdset (new_openset, nfds);
free_fdset (new_execset, nfds);
@@ -237,13 +243,15 @@ out:
int expand_files(struct files_struct *files, int nr)
{
int err, expand = 0;
+ struct fdtable *fdt;
- if (nr >= files->max_fdset) {
+ fdt = files_fdtable(files);
+ if (nr >= fdt->max_fdset) {
expand = 1;
if ((err = expand_fdset(files, nr)))
goto out;
}
- if (nr >= files->max_fds) {
+ if (nr >= fdt->max_fds) {
expand = 1;
if ((err = expand_fd_array(files, nr)))
goto out;