David Howells cf3cba4a42 vfs: syscall: Add fspick() to select a superblock for reconfiguration ... Provide an fspick() system call that can be used to pick an existing mountpoint into an fs_context which can thereafter be used to reconfigure a superblock (equivalent of the superblock side of -o remount). This looks like: int fd = fspick(AT_FDCWD, "/mnt", FSPICK_CLOEXEC | FSPICK_NO_AUTOMOUNT); fsconfig(fd, FSCONFIG_SET_FLAG, "intr", NULL, 0); fsconfig(fd, FSCONFIG_SET_FLAG, "noac", NULL, 0); fsconfig(fd, FSCONFIG_CMD_RECONFIGURE, NULL, NULL, 0); At the point of fspick being called, the file descriptor referring to the filesystem context is in exactly the same state as the one that was created by fsopen() after fsmount() has been successfully called. Signed-off-by: David Howells <dhowells@redhat.com> cc: linux-api@vger.kernel.org Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>		2019-03-20 18:49:06 -04:00
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Makefile	Merge branch 'x86/build' into x86/asm, to fix up conflicts	2017-11-07 10:54:30 +01:00
syscall_32.tbl	vfs: syscall: Add fspick() to select a superblock for reconfiguration	2019-03-20 18:49:06 -04:00
syscall_64.tbl	vfs: syscall: Add fspick() to select a superblock for reconfiguration	2019-03-20 18:49:06 -04:00
syscallhdr.sh	License cleanup: add SPDX GPL-2.0 license identifier to files with no license	2017-11-02 11:10:55 +01:00
syscalltbl.sh	syscalls/core, syscalls/x86: Rename struct pt_regs-based sys_*() to __x64_sys_*()	2018-04-09 16:47:28 +02:00