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Add lchown, lchmod, statvfs, fstatvfs

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This commit is contained in:
Justine Tunney 2022-08-22 20:49:33 -07:00
parent 7b74f6e20e
commit 5a632cf72d
24 changed files with 231 additions and 32 deletions
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2
libc/calls/calls.h
View file

@ -122,6 +122,8 @@ int ioprio_set(int, int, int);
int issetugid(void);
int kill(int, int);
int killpg(int, int);
int lchmod(const char *, uint32_t);
int lchown(const char *, uint32_t, uint32_t);
int link(const char *, const char *) dontthrow;
int linkat(int, const char *, int, const char *, int);
int madvise(void *, uint64_t, int);

3
libc/calls/calls.mk
View file

@ -177,7 +177,8 @@ o//libc/calls/fcntl.o: private \
# it's early runtime mandatory and quite huge without it
o//libc/calls/getcwd.greg.o \
o//libc/calls/getcwd-nt.greg.o \
o//libc/calls/getcwd-xnu.greg.o: private \
o//libc/calls/getcwd-xnu.greg.o \
o//libc/calls/statfs2cosmo.o: private \
OVERRIDE_CFLAGS += \
-Os

3
libc/calls/fstatfs-nt.c
View file

@ -18,6 +18,7 @@
╚─────────────────────────────────────────────────────────────────────────────*/
#include "libc/calls/calls.h"
#include "libc/calls/internal.h"
#include "libc/calls/struct/fsid.h"
#include "libc/calls/struct/statfs.h"
#include "libc/calls/struct/statfs.internal.h"
#include "libc/calls/syscall_support-nt.internal.h"
@ -69,7 +70,7 @@ textwindows int sys_fstatfs_nt(int64_t handle, struct statfs *f) {
}
f->f_fstypename[j] = 0;
f->f_type = h;
f->f_fsid = VolumeSerialNumber;
f->f_fsid = (fsid_t){{VolumeSerialNumber}};
f->f_flags = FileSystemFlags;
f->f_bsize = fs.BytesPerSector;
f->f_bsize *= fs.SectorsPerAllocationUnit;

1
libc/calls/fstatfs.c
View file

@ -27,6 +27,7 @@
/**
* Returns information about filesystem.
* @return 0 on success, or -1 w/ errno
*/
int fstatfs(int fd, struct statfs *sf) {
int rc;

37
libc/calls/fstatvfs.c Normal file
View file

@ -0,0 +1,37 @@
/*-*- 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/struct/statfs.h"
#include "libc/calls/struct/statfs.internal.h"
#include "libc/calls/struct/statvfs.h"
/**
* Returns information about filesystem.
* @return 0 on success, or -1 w/ errno
* @note consider using fstatfs()
*/
int fstatvfs(int fd, struct statvfs *sv) {
struct statfs sf;
if (fstatfs(fd, &sf) != -1) {
statfs2statvfs(sv, &sf);
return 0;
} else {
return -1;
}
}

34
libc/calls/lchmod.c Normal file
View file

@ -0,0 +1,34 @@
/*-*- 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/sysv/consts/at.h"
/**
* Changes mode of pathname, w/o dereferencing symlinks.
*
* @param uid is user id, or -1u to not change
* @param gid is group id, or -1u to not change
* @return 0 on success, or -1 w/ errno
* @see chown() which dereferences symbolic links
* @see /etc/passwd for user ids
* @see /etc/group for group ids
*/
int lchmod(const char *pathname, uint32_t mode) {
return fchmodat(AT_FDCWD, pathname, mode, AT_SYMLINK_NOFOLLOW);
}

1
libc/calls/statfs.c
View file

@ -28,6 +28,7 @@
/**
* Returns information about filesystem.
* @return 0 on success, or -1 w/ errno
*/
int statfs(const char *path, struct statfs *sf) {
int rc;

13
libc/calls/statfs2cosmo.c
View file

@ -197,7 +197,7 @@ void statfs2cosmo(struct statfs *f, const union statfs_meta *m) {
int64_t f_bavail;
int64_t f_files;
int64_t f_ffree;
int64_t f_fsid;
fsid_t f_fsid;
int64_t f_namelen;
int64_t f_frsize;
int64_t f_flags;
@ -217,6 +217,7 @@ void statfs2cosmo(struct statfs *f, const union statfs_meta *m) {
f_frsize = m->linux.f_frsize;
f_flags = m->linux.f_flags;
f_owner = 0;
bzero(f_fstypename, 16);
strcpy(f_fstypename, DescribeStatfsTypeLinux(m->linux.f_type));
} else if (IsFreebsd()) {
@ -232,7 +233,7 @@ void statfs2cosmo(struct statfs *f, const union statfs_meta *m) {
f_frsize = m->freebsd.f_bsize;
f_flags = m->freebsd.f_flags;
f_owner = m->freebsd.f_owner;
strcpy(f_fstypename, m->freebsd.f_fstypename);
memcpy(f_fstypename, m->freebsd.f_fstypename, 16);
} else if (IsXnu()) {
f_type = m->xnu.f_type;
@ -247,7 +248,7 @@ void statfs2cosmo(struct statfs *f, const union statfs_meta *m) {
f_frsize = m->xnu.f_bsize;
f_flags = m->xnu.f_flags;
f_owner = m->xnu.f_owner;
strcpy(f_fstypename, m->xnu.f_fstypename);
memcpy(f_fstypename, m->xnu.f_fstypename, 16);
} else if (IsOpenbsd()) {
f_type = f->f_type;
@ -262,7 +263,7 @@ void statfs2cosmo(struct statfs *f, const union statfs_meta *m) {
f_frsize = m->openbsd.f_bsize;
f_flags = m->openbsd.f_flags;
f_owner = m->openbsd.f_owner;
strcpy(f_fstypename, m->openbsd.f_fstypename);
memcpy(f_fstypename, m->openbsd.f_fstypename, 16);
} else if (IsNetbsd()) {
f_type = m->netbsd.f_type;
@ -277,7 +278,7 @@ void statfs2cosmo(struct statfs *f, const union statfs_meta *m) {
f_frsize = m->netbsd.f_bsize;
f_flags = m->netbsd.f_flags;
f_owner = m->netbsd.f_owner;
strcpy(f_fstypename, m->netbsd.f_fstypename);
memcpy(f_fstypename, m->netbsd.f_fstypename, 16);
} else {
asm("hlt");
@ -295,5 +296,5 @@ void statfs2cosmo(struct statfs *f, const union statfs_meta *m) {
f->f_namelen = f_namelen;
f->f_frsize = f_frsize;
f->f_flags = f_flags;
strcpy(f->f_fstypename, f_fstypename);
memcpy(f->f_fstypename, f_fstypename, 16);
}

36
libc/calls/statfs2statvfs.c Normal file
View file

@ -0,0 +1,36 @@
/*-*- 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/struct/statfs.h"
#include "libc/calls/struct/statvfs.h"
#include "libc/str/str.h"
void statfs2statvfs(struct statvfs *sv, const struct statfs *sf) {
bzero(sv, sizeof(*sv));
sv->f_bsize = sf->f_bsize;
sv->f_frsize = sf->f_frsize ? sf->f_frsize : sf->f_bsize;
sv->f_blocks = sf->f_blocks;
sv->f_bfree = sf->f_bfree;
sv->f_bavail = sf->f_bavail;
sv->f_files = sf->f_files;
sv->f_ffree = sf->f_ffree;
sv->f_favail = sf->f_ffree;
sv->f_fsid = sf->f_fsid.__val[0];
sv->f_flag = sf->f_flags;
sv->f_namemax = sf->f_namelen;
}

37
libc/calls/statvfs.c Normal file
View file

@ -0,0 +1,37 @@
/*-*- 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/struct/statfs.h"
#include "libc/calls/struct/statfs.internal.h"
#include "libc/calls/struct/statvfs.h"
/**
* Returns information about filesystem.
* @return 0 on success, or -1 w/ errno
* @note consider using statfs()
*/
int statvfs(const char *path, struct statvfs *sv) {
struct statfs sf;
if (statfs(path, &sf) != -1) {
statfs2statvfs(sv, &sf);
return 0;
} else {
return -1;
}
}

12
libc/calls/struct/fsid.h Normal file
View file

@ -0,0 +1,12 @@
#ifndef COSMOPOLITAN_LIBC_CALLS_STRUCT_FSID_H_
#define COSMOPOLITAN_LIBC_CALLS_STRUCT_FSID_H_
#if !(__ASSEMBLER__ + __LINKER__ + 0)
COSMOPOLITAN_C_START_
typedef struct fsid_t {
uint32_t __val[2];
} fsid_t;
COSMOPOLITAN_C_END_
#endif /* !(__ASSEMBLER__ + __LINKER__ + 0) */
#endif /* COSMOPOLITAN_LIBC_CALLS_STRUCT_FSID_H_ */

3
libc/calls/struct/statfs-freebsd.internal.h
View file

@ -1,5 +1,6 @@
#ifndef COSMOPOLITAN_LIBC_CALLS_STRUCT_STATFS_FREEBSD_INTERNAL_H_
#define COSMOPOLITAN_LIBC_CALLS_STRUCT_STATFS_FREEBSD_INTERNAL_H_
#include "libc/calls/struct/fsid.h"
#if !(__ASSEMBLER__ + __LINKER__ + 0)
COSMOPOLITAN_C_START_
@ -21,7 +22,7 @@ struct statfs_freebsd {
uint64_t f_spare[10]; /* unused spare */
uint32_t f_namemax; /* maximum filename length */
uint32_t f_owner; /* user that mounted the filesystem */
uint64_t f_fsid; /* filesystem id (endian 32 matters) */
fsid_t f_fsid; /* filesystem id */
char f_charspare[80]; /* spare string space */
char f_fstypename[16]; /* filesystem type name */
char f_mntfromname[1024]; /* mounted filesystem */

3
libc/calls/struct/statfs-linux.internal.h
View file

@ -1,5 +1,6 @@
#ifndef COSMOPOLITAN_LIBC_CALLS_STRUCT_STATFS_LINUX_INTERNAL_H_
#define COSMOPOLITAN_LIBC_CALLS_STRUCT_STATFS_LINUX_INTERNAL_H_
#include "libc/calls/struct/fsid.h"
#if !(__ASSEMBLER__ + __LINKER__ + 0)
COSMOPOLITAN_C_START_
@ -11,7 +12,7 @@ struct statfs_linux {
int64_t f_bavail; /* free blocks available to */
int64_t f_files; /* total file nodes in filesystem */
int64_t f_ffree; /* free file nodes in filesystem */
int64_t f_fsid; /* filesystem id */
fsid_t f_fsid; /* filesystem id */
int64_t f_namelen; /* maximum length of filenames */
int64_t f_frsize; /* fragment size */
int64_t f_flags; /* mount flags of filesystem 2.6.36 */

3
libc/calls/struct/statfs-netbsd.internal.h
View file

@ -1,5 +1,6 @@
#ifndef COSMOPOLITAN_LIBC_CALLS_STRUCT_STATFS_NETBSD_H_
#define COSMOPOLITAN_LIBC_CALLS_STRUCT_STATFS_NETBSD_H_
#include "libc/calls/struct/fsid.h"
#if !(__ASSEMBLER__ + __LINKER__ + 0)
COSMOPOLITAN_C_START_
@ -13,7 +14,7 @@ struct statfs_netbsd {
int64_t f_bavail; /* free blocks avail to non-superuser */
int64_t f_files; /* total file nodes in file system */
int64_t f_ffree; /* free file nodes in fs */
uint64_t f_fsid; /* file system id (endian 32 matters) */
fsid_t f_fsid; /* file system id */
uint32_t f_owner; /* user that mounted the file system */
int64_t f_flags; /* copy of mount flags */
int64_t f_syncwrites; /* count of sync writes since mount */

3
libc/calls/struct/statfs-openbsd.internal.h
View file

@ -1,5 +1,6 @@
#ifndef COSMOPOLITAN_LIBC_CALLS_STRUCT_STATFS_OPENBSD_H_
#define COSMOPOLITAN_LIBC_CALLS_STRUCT_STATFS_OPENBSD_H_
#include "libc/calls/struct/fsid.h"
#include "libc/sock/struct/sockaddr.h"
#if !(__ASSEMBLER__ + __LINKER__ + 0)
COSMOPOLITAN_C_START_
@ -119,7 +120,7 @@ struct statfs_openbsd {
uint64_t f_syncreads; /* count of sync reads since mount */
uint64_t f_asyncwrites; /* count of async writes since mount */
uint64_t f_asyncreads; /* count of async reads since mount */
uint64_t f_fsid; /* file system id (endian 32 matters) */
fsid_t f_fsid; /* file system id */
uint32_t f_namemax; /* maximum filename length */
uint32_t f_owner; /* user that mounted the file system */
uint64_t f_ctime; /* last mount [-u] time */

3
libc/calls/struct/statfs-xnu.internal.h
View file

@ -1,5 +1,6 @@
#ifndef COSMOPOLITAN_LIBC_CALLS_STRUCT_STATFS_XNU_INTERNAL_H_
#define COSMOPOLITAN_LIBC_CALLS_STRUCT_STATFS_XNU_INTERNAL_H_
#include "libc/calls/struct/fsid.h"
#if !(__ASSEMBLER__ + __LINKER__ + 0)
COSMOPOLITAN_C_START_
@ -11,7 +12,7 @@ struct statfs_xnu {
uint64_t f_bavail; /* free blocks avail to non-superuser */
uint64_t f_files; /* total file nodes in file system */
uint64_t f_ffree; /* free file nodes in fs */
uint64_t f_fsid; /* file system id (endian 32 matters) */
fsid_t f_fsid; /* file system id */
uint32_t f_owner; /* user that mounted the filesystem */
uint32_t f_type; /* type of filesystem */
uint32_t f_flags; /* copy of mount exported flags */

3
libc/calls/struct/statfs.h
View file

@ -1,5 +1,6 @@
#ifndef COSMOPOLITAN_LIBC_CALLS_STRUCT_STATFS_H_
#define COSMOPOLITAN_LIBC_CALLS_STRUCT_STATFS_H_
#include "libc/calls/struct/fsid.h"
#if !(__ASSEMBLER__ + __LINKER__ + 0)
COSMOPOLITAN_C_START_
@ -11,7 +12,7 @@ struct statfs { /* cosmo abi */
int64_t f_bavail; /* free blocks available to unprivileged users */
int64_t f_files; /* total file nodes in filesystem */
int64_t f_ffree; /* free file nodes in filesystem */
int64_t f_fsid; /* filesystem id */
fsid_t f_fsid; /* filesystem id */
int64_t f_namelen; /* maximum length of filenames */
int64_t f_frsize; /* fragment size */
int64_t f_flags; /* mount flags of filesystem 2.6.36 */

2
libc/calls/struct/statfs.internal.h
View file

@ -2,6 +2,7 @@
#define COSMOPOLITAN_LIBC_CALLS_STRUCT_STATFS_INTERNAL_H_
#include "libc/calls/struct/statfs-meta.internal.h"
#include "libc/calls/struct/statfs.h"
#include "libc/calls/struct/statvfs.h"
#include "libc/mem/alloca.h"
#if !(__ASSEMBLER__ + __LINKER__ + 0)
COSMOPOLITAN_C_START_
@ -10,6 +11,7 @@ int sys_statfs(const char *, union statfs_meta *);
int sys_fstatfs(int, union statfs_meta *);
int sys_fstatfs_nt(int64_t, struct statfs *);
int sys_statfs_nt(const char *, struct statfs *);
void statfs2statvfs(struct statvfs *, const struct statfs *);
const char *DescribeStatfs(char[300], int, const struct statfs *);
#define DescribeStatfs(rc, sf) DescribeStatfs(alloca(300), rc, sf)

25
libc/calls/struct/statvfs.h Normal file
View file

@ -0,0 +1,25 @@
#ifndef COSMOPOLITAN_LIBC_CALLS_STRUCT_STATVFS_H_
#define COSMOPOLITAN_LIBC_CALLS_STRUCT_STATVFS_H_
#if !(__ASSEMBLER__ + __LINKER__ + 0)
COSMOPOLITAN_C_START_
struct statvfs {
unsigned long f_bsize; /* Filesystem block size */
unsigned long f_frsize; /* Fragment size */
uint64_t f_blocks; /* Size of fs in f_frsize units */
uint64_t f_bfree; /* Number of free blocks */
uint64_t f_bavail; /* Number of free blocks for unprivileged users */
uint64_t f_files; /* Number of inodes */
uint64_t f_ffree; /* Number of free inodes */
uint64_t f_favail; /* Number of free inodes for unprivileged users */
unsigned long f_fsid; /* Filesystem ID */
unsigned long f_flag; /* Mount flags */
unsigned long f_namemax; /* Maximum filename length */
};
int statvfs(const char *, struct statvfs *);
int fstatvfs(int, struct statvfs *);
COSMOPOLITAN_C_END_
#endif /* !(__ASSEMBLER__ + __LINKER__ + 0) */
#endif /* COSMOPOLITAN_LIBC_CALLS_STRUCT_STATVFS_H_ */

2
libc/calls/sysparam.h
View file

@ -4,7 +4,7 @@
#define MAXSYMLINKS 20
#define MAXHOSTNAMELEN 64
#define MAXNAMLEN 255
#define MAXPATHLEN 4096
#define MAXPATHLEN PATH_MAX
#define NBBY 8
#define NGROUPS 32
#define CANBSIZ 255

1
libc/stdio/stdio.h
View file

@ -7,6 +7,7 @@
#define L_ctermid 20
#define FILENAME_MAX PATH_MAX
#define FOPEN_MAX 1000
#define TMP_MAX 10000
#if !(__ASSEMBLER__ + __LINKER__ + 0)
COSMOPOLITAN_C_START_