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Make some last minute improvements to make.com

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This commit is contained in:
Justine Tunney 2022-08-07 05:59:53 -07:00
parent 6a5717a48f
commit 13c1c45075
16 changed files with 158 additions and 43 deletions
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1
libc/calls/calls.h
View file

@ -142,6 +142,7 @@ int pause(void);
int personality(uint64_t);
int pipe(int[hasatleast 2]);
int pipe2(int[hasatleast 2], int);
int pivot_root(const char *, const char *);
int pledge(const char *, const char *);
int posix_fadvise(int, uint64_t, uint64_t, int);
int posix_madvise(void *, uint64_t, int);

1
libc/calls/chdir.c
View file

@ -28,6 +28,7 @@
*
* This does *not* update the `PWD` environment variable.
*
* @return 0 on success, or -1 w/ errno
* @asyncsignalsafe
* @see fchdir()
*/

33
libc/calls/pivot_root.c Normal file
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@ -0,0 +1,33 @@
/*-*- 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 2022 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/calls.h"
#include "libc/calls/strace.internal.h"
#include "libc/calls/syscall-sysv.internal.h"
/**
* Changes root mount.
*
* @raise ENOSYS on non-Linux
*/
int pivot_root(const char *new_root, const char *put_old) {
int rc;
rc = sys_pivot_root(new_root, put_old);
STRACE("pivot_root(%#s, %#s) → %d% m", new_root, put_old, rc);
return rc;
}

2
libc/calls/syscall-sysv.internal.h
View file

@ -68,6 +68,7 @@ i32 sys_mincore(void *, u64, unsigned char *) hidden;
i32 sys_mkdirat(i32, const char *, u32) hidden;
i32 sys_mkfifo(const char *, u32) hidden;
i32 sys_mknod(const char *, u32, u64) hidden;
i32 sys_unmount(const char *, i32) hidden;
i32 sys_mprotect(void *, u64, i32) hidden;
i32 sys_msync(void *, u64, i32) hidden;
i32 sys_munmap(void *, u64) hidden;
@ -76,6 +77,7 @@ i32 sys_openat(i32, const char *, i32, u32) hidden;
i32 sys_pause(void) hidden;
i32 sys_pipe(i32[hasatleast 2]) hidden;
i32 sys_pipe2(i32[hasatleast 2], u32) hidden;
i32 sys_pivot_root(const char *, const char *) hidden;
i32 sys_pledge(const char *, const char *) hidden;
i32 sys_posix_openpt(i32) hidden;
i32 sys_renameat(i32, const char *, i32, const char *) hidden;

11
libc/calls/unmount.c
View file

@ -17,8 +17,8 @@
│ PERFORMANCE OF THIS SOFTWARE. │
╚─────────────────────────────────────────────────────────────────────────────*/
#include "libc/calls/mount.h"
int sys_unmount(const char *, int);
#include "libc/calls/strace.internal.h"
#include "libc/calls/syscall-sysv.internal.h"
/**
* Unmounts file system.
@ -30,12 +30,15 @@ int sys_unmount(const char *, int);
* The following flags may also be used, but could be set to zero at
* runtime if the underlying kernel doesn't support them.
*
* - `MNT_DETACH`
* - `MNT_DETACH`: lazily unmount; Linux-only
* - `MNT_EXPIRE`
* - `UMOUNT_NOFOLLOW`
* - `MNT_BYFSID`
*
*/
int unmount(const char *target, int flags) {
return sys_unmount(target, flags);
int rc;
rc = sys_unmount(target, flags);
STRACE("unmount(%#s, %#x) → %d% m", target, flags, rc);
return rc;
}