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authorDominik Brodowski <linux@dominikbrodowski.net>2018-03-13 21:43:59 +0100
committerDominik Brodowski <linux@dominikbrodowski.net>2018-04-02 20:16:03 +0200
commitcbb60b924b9f3e4d7c67a1c9dcf981718f926e4e (patch)
treef3952696484e55feb05b862849d15740b87183a8 /init/do_mounts.c
parent454dab3f965ec24fda8fbe135c8dad4c5b238a86 (diff)
downloadlwn-cbb60b924b9f3e4d7c67a1c9dcf981718f926e4e.tar.gz
lwn-cbb60b924b9f3e4d7c67a1c9dcf981718f926e4e.zip
fs: add ksys_ioctl() helper; remove in-kernel calls to sys_ioctl()
Using this helper allows us to avoid the in-kernel calls to the sys_ioctl() syscall. The ksys_ prefix denotes that this function is meant as a drop-in replacement for the syscall. In particular, it uses the same calling convention as sys_ioctl(). After careful review, at least some of these calls could be converted to do_vfs_ioctl() in future. This patch is part of a series which removes in-kernel calls to syscalls. On this basis, the syscall entry path can be streamlined. For details, see http://lkml.kernel.org/r/20180325162527.GA17492@light.dominikbrodowski.net Cc: Alexander Viro <viro@zeniv.linux.org.uk> Signed-off-by: Dominik Brodowski <linux@dominikbrodowski.net>
Diffstat (limited to 'init/do_mounts.c')
-rw-r--r--init/do_mounts.c8
1 files changed, 4 insertions, 4 deletions
diff --git a/init/do_mounts.c b/init/do_mounts.c
index cc1103477071..b17e0095eb4e 100644
--- a/init/do_mounts.c
+++ b/init/do_mounts.c
@@ -491,18 +491,18 @@ void __init change_floppy(char *fmt, ...)
va_end(args);
fd = ksys_open("/dev/root", O_RDWR | O_NDELAY, 0);
if (fd >= 0) {
- sys_ioctl(fd, FDEJECT, 0);
+ ksys_ioctl(fd, FDEJECT, 0);
ksys_close(fd);
}
printk(KERN_NOTICE "VFS: Insert %s and press ENTER\n", buf);
fd = ksys_open("/dev/console", O_RDWR, 0);
if (fd >= 0) {
- sys_ioctl(fd, TCGETS, (long)&termios);
+ ksys_ioctl(fd, TCGETS, (long)&termios);
termios.c_lflag &= ~ICANON;
- sys_ioctl(fd, TCSETSF, (long)&termios);
+ ksys_ioctl(fd, TCSETSF, (long)&termios);
sys_read(fd, &c, 1);
termios.c_lflag |= ICANON;
- sys_ioctl(fd, TCSETSF, (long)&termios);
+ ksys_ioctl(fd, TCSETSF, (long)&termios);
ksys_close(fd);
}
}