cosmopolitan/libc/calls/mount.c

101 lines
4.1 KiB
C
Raw Normal View History

/*-*- mode:c;indent-tabs-mode:nil;c-basic-offset:2;tab-width:8;coding:utf-8 -*-│
vi: set net ft=c ts=2 sts=2 sw=2 fenc=utf-8 :vi
Copyright 2021 Justine Alexandra Roberts Tunney
Permission to use, copy, modify, and/or distribute this software for
any purpose with or without fee is hereby granted, provided that the
above copyright notice and this permission notice appear in all copies.
THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL
WARRANTIES WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED
WARRANTIES OF MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE
AUTHOR BE LIABLE FOR ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL
DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR
PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER
TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR
PERFORMANCE OF THIS SOFTWARE.
*/
#include "libc/calls/mount.h"
#include "libc/dce.h"
#include "libc/str/str.h"
#include "libc/sysv/errfuns.h"
int32_t sys_mount_linux(const char *source, const char *target,
const char *filesystemtype, uint64_t mountflags,
const void *data) asm("sys_mount");
int32_t sys_mount_bsd(const char *type, const char *dir, int32_t flags,
void *data) asm("sys_mount");
/**
* Mounts file system.
*
* The following flags may be specified:
*
* - `MS_RDONLY` (mount read-only)
* - `MS_NOSUID` (don't honor S_ISUID bit)
* - `MS_NODEV` (disallow special files)
* - `MS_NOEXEC` (disallow program execution)
* - `MS_SYNCHRONOUS` (writes are synced at once)
* - `MS_NOATIME` (do not update access times)
* - `MS_REMOUNT` (tune existing mounting)
*
* The following flags may also be used, but could be set to zero at
* runtime if the underlying kernel doesn't support them.
*
* - `MNT_ASYNC` (xnu, freebsd, openbsd, netbsd)
* - `MNT_RELOAD` (xnu, freebsd, openbsd, netbsd)
* - `MS_STRICTATIME` (linux, xnu)
* - `MS_RELATIME` (linux, netbsd)
* - `MNT_SNAPSHOT` (xnu, freebsd)
* - `MS_MANDLOCK` (linux)
* - `MS_DIRSYNC` (linux)
* - `MS_NODIRATIME` (linux)
* - `MS_BIND` (linux)
* - `MS_MOVE` (linux)
* - `MS_REC` (linux)
* - `MS_SILENT` (linux)
* - `MS_POSIXACL` (linux)
* - `MS_UNBINDABLE` (linux)
* - `MS_PRIVATE` (linux)
* - `MS_SLAVE` (linux)
* - `MS_SHARED` (linux)
* - `MS_KERNMOUNT` (linux)
* - `MS_I_VERSION` (linux)
* - `MS_LAZYTIME` (linux)
* - `MS_ACTIVE` (linux)
* - `MS_NOUSER` (linux)
* - `MS_RMT`_MASK (linux)
* - `MNT_SUIDDIR` (freebsd)
* - `MNT_NOCLUSTERR` (freebsd)
* - `MNT_NOCLUSTERW` (freebsd)
*
* Some example values for the `type` parameter:
*
* - `"nfs"`
* - `"vfat"`
* - `"tmpfs"`
* - `"iso8601"`
*
*/
int mount(const char *source, const char *target, const char *type,
unsigned long flags, const void *data) {
if (!IsWindows()) {
if (!IsBsd()) {
return sys_mount_linux(source, target, type, flags, data);
} else {
if (!strcmp(type, "iso9660")) type = "cd9660";
if (!strcmp(type, "vfat")) {
if (IsOpenbsd() || IsNetbsd()) {
type = "msdos";
} else {
type = "msdosfs";
}
}
return sys_mount_bsd(type, target, flags, data);
}
} else {
return enosys();
}
}