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autofs4: don't open-code fd_install()

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The only difference between autofs_dev_ioctl_fd_install() and
fd_install() is __set_close_on_exec() done by the latter.  Just
use get_unused_fd_flags(O_CLOEXEC) to allocate the descriptor
and be done with that...

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
This commit is contained in:
Al Viro 2012-08-12 18:04:37 -04:00
parent 1a7bd2265f
commit c921b40d62
1 changed files with 2 additions and 16 deletions
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18
fs/autofs4/dev-ioctl.c
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@ -221,20 +221,6 @@ static int test_by_type(struct path *path, void *p)
return ino && ino->sbi->type & *(unsigned *)p;
}
static void autofs_dev_ioctl_fd_install(unsigned int fd, struct file *file)
{
struct files_struct *files = current->files;
struct fdtable *fdt;
spin_lock(&files->file_lock);
fdt = files_fdtable(files);
BUG_ON(fdt->fd[fd] != NULL);
rcu_assign_pointer(fdt->fd[fd], file);
__set_close_on_exec(fd, fdt);
spin_unlock(&files->file_lock);
}
/*
* Open a file descriptor on the autofs mount point corresponding
* to the given path and device number (aka. new_encode_dev(sb->s_dev)).
@ -243,7 +229,7 @@ static int autofs_dev_ioctl_open_mountpoint(const char *name, dev_t devid)
{
int err, fd;
fd = get_unused_fd();
fd = get_unused_fd_flags(O_CLOEXEC);
if (likely(fd >= 0)) {
struct file *filp;
struct path path;
@ -264,7 +250,7 @@ static int autofs_dev_ioctl_open_mountpoint(const char *name, dev_t devid)
goto out;
}
autofs_dev_ioctl_fd_install(fd, filp);
fd_install(fd, filp);
}
return fd;