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Diffstat (limited to 'fs/open.c')
-rw-r--r--fs/open.c41
1 files changed, 24 insertions, 17 deletions
diff --git a/fs/open.c b/fs/open.c
index 4ee2dcc31c28..b6542516a0ca 100644
--- a/fs/open.c
+++ b/fs/open.c
@@ -842,14 +842,16 @@ int get_unused_fd(void)
{
struct files_struct * files = current->files;
int fd, error;
+ struct fdtable *fdt;
error = -EMFILE;
spin_lock(&files->file_lock);
repeat:
- fd = find_next_zero_bit(files->open_fds->fds_bits,
- files->max_fdset,
- files->next_fd);
+ fdt = files_fdtable(files);
+ fd = find_next_zero_bit(fdt->open_fds->fds_bits,
+ fdt->max_fdset,
+ fdt->next_fd);
/*
* N.B. For clone tasks sharing a files structure, this test
@@ -872,14 +874,14 @@ repeat:
goto repeat;
}
- FD_SET(fd, files->open_fds);
- FD_CLR(fd, files->close_on_exec);
- files->next_fd = fd + 1;
+ FD_SET(fd, fdt->open_fds);
+ FD_CLR(fd, fdt->close_on_exec);
+ fdt->next_fd = fd + 1;
#if 1
/* Sanity check */
- if (files->fd[fd] != NULL) {
+ if (fdt->fd[fd] != NULL) {
printk(KERN_WARNING "get_unused_fd: slot %d not NULL!\n", fd);
- files->fd[fd] = NULL;
+ fdt->fd[fd] = NULL;
}
#endif
error = fd;
@@ -893,9 +895,10 @@ EXPORT_SYMBOL(get_unused_fd);
static inline void __put_unused_fd(struct files_struct *files, unsigned int fd)
{
- __FD_CLR(fd, files->open_fds);
- if (fd < files->next_fd)
- files->next_fd = fd;
+ struct fdtable *fdt = files_fdtable(files);
+ __FD_CLR(fd, fdt->open_fds);
+ if (fd < fdt->next_fd)
+ fdt->next_fd = fd;
}
void fastcall put_unused_fd(unsigned int fd)
@@ -924,10 +927,12 @@ EXPORT_SYMBOL(put_unused_fd);
void fastcall fd_install(unsigned int fd, struct file * file)
{
struct files_struct *files = current->files;
+ struct fdtable *fdt;
spin_lock(&files->file_lock);
- if (unlikely(files->fd[fd] != NULL))
+ fdt = files_fdtable(files);
+ if (unlikely(fdt->fd[fd] != NULL))
BUG();
- files->fd[fd] = file;
+ fdt->fd[fd] = file;
spin_unlock(&files->file_lock);
}
@@ -1010,15 +1015,17 @@ asmlinkage long sys_close(unsigned int fd)
{
struct file * filp;
struct files_struct *files = current->files;
+ struct fdtable *fdt;
spin_lock(&files->file_lock);
- if (fd >= files->max_fds)
+ fdt = files_fdtable(files);
+ if (fd >= fdt->max_fds)
goto out_unlock;
- filp = files->fd[fd];
+ filp = fdt->fd[fd];
if (!filp)
goto out_unlock;
- files->fd[fd] = NULL;
- FD_CLR(fd, files->close_on_exec);
+ fdt->fd[fd] = NULL;
+ FD_CLR(fd, fdt->close_on_exec);
__put_unused_fd(files, fd);
spin_unlock(&files->file_lock);
return filp_close(filp, files);