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am 12766c45: am b2da4562: Merge "Clean up fpathconf(3)/pathconf(3)."

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* commit '12766c458e06e8d3a7f27d1b079443827b40aa48':
  Clean up fpathconf(3)/pathconf(3).
This commit is contained in:
Elliott Hughes 2014-09-23 16:20:00 +00:00 committed by Android Git Automerger
commit 9c8e85f60d
9 changed files with 256 additions and 401 deletions
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2
libc/Android.mk
View File

@ -49,7 +49,6 @@ libc_common_src_files := \
bionic/ioctl.c \ bionic/ioctl.c \
bionic/isatty.c \ bionic/isatty.c \
bionic/memmem.c \ bionic/memmem.c \
bionic/pathconf.c \
bionic/pututline.c \ bionic/pututline.c \
bionic/sched_cpualloc.c \ bionic/sched_cpualloc.c \
bionic/sched_cpucount.c \ bionic/sched_cpucount.c \
@ -142,6 +141,7 @@ libc_bionic_src_files := \
bionic/mntent.cpp \ bionic/mntent.cpp \
bionic/NetdClientDispatch.cpp \ bionic/NetdClientDispatch.cpp \
bionic/open.cpp \ bionic/open.cpp \
bionic/pathconf.cpp \
bionic/pause.cpp \ bionic/pause.cpp \
bionic/pipe.cpp \ bionic/pipe.cpp \
bionic/poll.cpp \ bionic/poll.cpp \

267
libc/bionic/pathconf.c
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@ -1,267 +0,0 @@
/*
* Copyright (C) 2008 The Android Open Source Project
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* * Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* * Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in
* the documentation and/or other materials provided with the
* distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
* FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
* COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
* OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
* AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
* OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
* OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*/
#include <pathconf.h>
#include <sys/vfs.h>
#include <sys/limits.h>
#include <errno.h>
/* these may not be defined yet by our headers */
#ifndef _POSIX_VDISABLE
#define _POSIX_VDISABLE -1
#endif
#ifndef _POSIX_SYNC_IO
#define _POSIX_SYNC_IO -1
#endif
#ifndef _POSIX_PRIO_IO
#define _POSIX_PRIO_IO -1
#endif
#ifndef _POSIX_ASYNC_IO
#define _POSIX_ASYNC_IO -1
#endif
static long
__filesizebits( struct statfs* s )
{
#define EOL_MAGIC 0x0000U
/* list of known 64-bit aware filesystems */
static const uint32_t known64[] = {
EXT2_SUPER_MAGIC,
UFS_MAGIC,
REISERFS_SUPER_MAGIC,
XFS_SUPER_MAGIC,
SMB_SUPER_MAGIC,
UDF_SUPER_MAGIC,
JFS_SUPER_MAGIC,
NTFS_SB_MAGIC,
VXFS_SUPER_MAGIC,
EOL_MAGIC
};
int nn = 0;
for (; known64[nn] != EOL_MAGIC; ++nn) {
if (known64[nn] == s->f_type) {
return 64;
}
}
return 32;
}
static long
__link_max( struct statfs* s )
{
// These constant values were taken from kernel headers.
// They're not available in uapi headers.
static const struct { uint32_t type; int max; } knownMax[] =
{
{ EXT2_SUPER_MAGIC, 32000 },
{ EXT3_SUPER_MAGIC, 32000 },
{ MINIX_SUPER_MAGIC, 250 },
{ MINIX2_SUPER_MAGIC, 65530 },
{ REISERFS_SUPER_MAGIC, 0xffff - 1000 },
{ UFS_MAGIC, 32000 },
{ EOL_MAGIC, 0 }
};
int nn = 0;
for (; knownMax[nn].type != EOL_MAGIC; ++nn) {
if (knownMax[nn].type == s->f_type) {
return knownMax[nn].max;
}
}
return LINK_MAX;
}
static long
__2_symlinks( struct statfs* s )
{
/* list of know filesystems that don't support symlinks */
static const uint32_t knownNoSymlinks[] = {
ADFS_SUPER_MAGIC, BFS_MAGIC, CRAMFS_MAGIC,
EFS_SUPER_MAGIC, MSDOS_SUPER_MAGIC, NTFS_SB_MAGIC,
QNX4_SUPER_MAGIC,
EOL_MAGIC
};
int nn = 0;
for (; knownNoSymlinks[nn] != EOL_MAGIC; ++nn) {
if (knownNoSymlinks[nn] == s->f_type) {
return 0;
}
}
return 1;
}
static long
__name_max( struct statfs* s )
{
return s->f_namelen;
}
long
pathconf(const char *path, int name)
{
struct statfs buf;
int ret = statfs( path, &buf );
if (ret < 0)
return -1;
switch (name) {
case _PC_FILESIZEBITS:
return __filesizebits(&buf);
case _PC_LINK_MAX:
return __link_max(&buf);
case _PC_MAX_CANON:
return MAX_CANON;
case _PC_MAX_INPUT:
return MAX_INPUT;
case _PC_NAME_MAX:
return __name_max(&buf);
case _PC_PATH_MAX:
return PATH_MAX;
case _PC_PIPE_BUF:
return PIPE_BUF;
case _PC_2_SYMLINKS:
return __2_symlinks(&buf);
#if 0 /* don't know what to do there, the specs are really weird */
case _PC_ALLOC_SIZE_MIN:
case _PC_REC_INCR_XFER_SIZE:
case _PC_REC_MAX_XFER_SIZE:
case _PC_REC_MIN_XFER_SIZE:
case _PC_REC_XFER_ALIGN:
#endif
case _PC_SYMLINK_MAX:
return -1; /* no limit */
case _PC_CHOWN_RESTRICTED:
return _POSIX_CHOWN_RESTRICTED;
case _PC_NO_TRUNC:
return _POSIX_NO_TRUNC;
case _PC_VDISABLE:
return _POSIX_VDISABLE;
case _PC_ASYNC_IO:
return _POSIX_ASYNC_IO;
case _PC_PRIO_IO:
return _POSIX_PRIO_IO;
case _PC_SYNC_IO:
return _POSIX_SYNC_IO;
default:
errno = EINVAL;
return -1;
}
}
long fpathconf(int fildes, int name)
{
struct statfs buf;
int ret = fstatfs(fildes, &buf);
if (ret < 0)
return -1;
switch (name) {
case _PC_FILESIZEBITS:
return __filesizebits(&buf);
case _PC_LINK_MAX:
return __link_max(&buf);
case _PC_MAX_CANON:
return MAX_CANON;
case _PC_MAX_INPUT:
return MAX_INPUT;
case _PC_NAME_MAX:
return __name_max(&buf);
case _PC_PATH_MAX:
return PATH_MAX;
case _PC_PIPE_BUF:
return PIPE_BUF;
case _PC_2_SYMLINKS:
return __2_symlinks(&buf);
#if 0 /* don't know what to do there, the specs are really weird */
case _PC_ALLOC_SIZE_MIN:
case _PC_REC_INCR_XFER_SIZE:
case _PC_REC_MAX_XFER_SIZE:
case _PC_REC_MIN_XFER_SIZE:
case _PC_REC_XFER_ALIGN:
#endif
case _PC_SYMLINK_MAX:
return -1; /* no limit */
case _PC_CHOWN_RESTRICTED:
return _POSIX_CHOWN_RESTRICTED;
case _PC_NO_TRUNC:
return _POSIX_NO_TRUNC;
case _PC_VDISABLE:
return _POSIX_VDISABLE;
case _PC_ASYNC_IO:
return _POSIX_ASYNC_IO;
case _PC_PRIO_IO:
return _POSIX_PRIO_IO;
case _PC_SYNC_IO:
return _POSIX_SYNC_IO;
default:
errno = EINVAL;
return -1;
}
}

152
libc/bionic/pathconf.cpp Normal file
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@ -0,0 +1,152 @@
/*
* Copyright (C) 2008 The Android Open Source Project
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* * Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* * Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in
* the documentation and/or other materials provided with the
* distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
* FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
* COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
* OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
* AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
* OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
* OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*/
#include <unistd.h>
#include <errno.h>
#include <sys/limits.h>
#include <sys/vfs.h>
static long __filesizebits(const struct statfs& s) {
switch (s.f_type) {
case JFFS2_SUPER_MAGIC:
case MSDOS_SUPER_MAGIC:
case NCP_SUPER_MAGIC:
return 32;
}
// There won't be any new 32-bit file systems.
return 64;
}
static long __link_max(const struct statfs& s) {
// These constant values were taken from kernel headers.
// They're not available in uapi headers.
switch (s.f_type) {
case EXT2_SUPER_MAGIC:
return 32000;
case MINIX_SUPER_MAGIC:
return 250;
case MINIX2_SUPER_MAGIC:
return 65530;
case REISERFS_SUPER_MAGIC:
return 0xffff - 1000;
case UFS_MAGIC:
return 32000;
}
return LINK_MAX;
}
static long __2_symlinks(const struct statfs& s) {
switch (s.f_type) {
case ADFS_SUPER_MAGIC:
case BFS_MAGIC:
case CRAMFS_MAGIC:
case EFS_SUPER_MAGIC:
case MSDOS_SUPER_MAGIC:
case QNX4_SUPER_MAGIC:
return 0;
}
return 1;
}
static long __pathconf(const struct statfs& s, int name) {
switch (name) {
case _PC_FILESIZEBITS:
return __filesizebits(s);
case _PC_LINK_MAX:
return __link_max(s);
case _PC_MAX_CANON:
return MAX_CANON;
case _PC_MAX_INPUT:
return MAX_INPUT;
case _PC_NAME_MAX:
return s.f_namelen;
case _PC_PATH_MAX:
return PATH_MAX;
case _PC_PIPE_BUF:
return PIPE_BUF;
case _PC_2_SYMLINKS:
return __2_symlinks(s);
#if 0
case _PC_ALLOC_SIZE_MIN:
case _PC_REC_INCR_XFER_SIZE:
case _PC_REC_MAX_XFER_SIZE:
case _PC_REC_MIN_XFER_SIZE:
case _PC_REC_XFER_ALIGN:
#endif
case _PC_SYMLINK_MAX:
return -1; /* no limit */
case _PC_CHOWN_RESTRICTED:
return _POSIX_CHOWN_RESTRICTED;
case _PC_NO_TRUNC:
return _POSIX_NO_TRUNC;
case _PC_VDISABLE:
return _POSIX_VDISABLE;
case _PC_ASYNC_IO:
return -1;
case _PC_PRIO_IO:
return -1;
case _PC_SYNC_IO:
return -1;
default:
errno = EINVAL;
return -1;
}
}
long pathconf(const char* path, int name) {
struct statfs sb;
if (statfs(path, &sb) == -1) {
return -1;
}
return __pathconf(sb, name);
}
long fpathconf(int fd, int name) {
struct statfs sb;
if (fstatfs(fd, &sb) == -1) {
return -1;
}
return __pathconf(sb, name);
}

8
libc/bionic/sysconf.cpp
View File

@ -152,18 +152,12 @@ static int __sysconf_monotonic_clock() {
int sysconf(int name) { int sysconf(int name) {
switch (name) { switch (name) {
case _SC_ARG_MAX: return _POSIX_ARG_MAX; case _SC_ARG_MAX: return _POSIX_ARG_MAX;
case _SC_BC_BASE_MAX: return _POSIX2_BC_BASE_MAX;
case _SC_BC_DIM_MAX: return _POSIX2_BC_DIM_MAX;
case _SC_BC_SCALE_MAX: return _POSIX2_BC_SCALE_MAX;
case _SC_BC_STRING_MAX: return _POSIX2_BC_STRING_MAX;
case _SC_CHILD_MAX: return CHILD_MAX; case _SC_CHILD_MAX: return CHILD_MAX;
case _SC_CLK_TCK: return SYSTEM_CLK_TCK; case _SC_CLK_TCK: return SYSTEM_CLK_TCK;
case _SC_COLL_WEIGHTS_MAX: return _POSIX2_COLL_WEIGHTS_MAX;
case _SC_EXPR_NEST_MAX: return _POSIX2_EXPR_NEST_MAX;
case _SC_LINE_MAX: return _POSIX2_LINE_MAX; case _SC_LINE_MAX: return _POSIX2_LINE_MAX;
case _SC_NGROUPS_MAX: return NGROUPS_MAX; case _SC_NGROUPS_MAX: return NGROUPS_MAX;
case _SC_OPEN_MAX: return OPEN_MAX; case _SC_OPEN_MAX: return OPEN_MAX;
//case _SC_PASS_MAX: return PASS_MAX; case _SC_PASS_MAX: return PASS_MAX;
case _SC_2_C_BIND: return SYSTEM_2_C_BIND; case _SC_2_C_BIND: return SYSTEM_2_C_BIND;
case _SC_2_C_DEV: return SYSTEM_2_C_DEV; case _SC_2_C_DEV: return SYSTEM_2_C_DEV;
case _SC_2_C_VERSION: return SYSTEM_2_C_VER; case _SC_2_C_VERSION: return SYSTEM_2_C_VER;

38
libc/include/limits.h
View File

@ -37,40 +37,6 @@
#include <sys/cdefs.h> #include <sys/cdefs.h>
#if __POSIX_VISIBLE
#define _POSIX_ARG_MAX 4096
#define _POSIX_CHILD_MAX 25
#define _POSIX_LINK_MAX 8
#define _POSIX_MAX_CANON 255
#define _POSIX_MAX_INPUT 255
#define _POSIX_NAME_MAX 14
#define _POSIX_NGROUPS_MAX 0
#define _POSIX_OPEN_MAX 16
#define _POSIX_PATH_MAX 256
#define _POSIX_PIPE_BUF 512
#define _POSIX_RE_DUP_MAX 255
#define _POSIX_SEM_VALUE_MAX 32767
#define _POSIX_SSIZE_MAX 32767
#define _POSIX_STREAM_MAX 8
#define _POSIX_SYMLINK_MAX 255
#define _POSIX_SYMLOOP_MAX 8
#define _POSIX_TZNAME_MAX 3
#define _POSIX2_BC_BASE_MAX 99
#define _POSIX2_BC_DIM_MAX 2048
#define _POSIX2_BC_SCALE_MAX 99
#define _POSIX2_BC_STRING_MAX 1000
#define _POSIX2_COLL_WEIGHTS_MAX 2
#define _POSIX2_EXPR_NEST_MAX 32
#define _POSIX2_LINE_MAX 2048
#define _POSIX2_RE_DUP_MAX _POSIX_RE_DUP_MAX
#if __POSIX_VISIBLE >= 200112
#define _POSIX_TTY_NAME_MAX 9 /* includes trailing NUL */
#define _POSIX_LOGIN_NAME_MAX 9 /* includes trailing NUL */
#endif /* __POSIX_VISIBLE >= 200112 */
#endif /* __POSIX_VISIBLE */
#if __XPG_VISIBLE #if __XPG_VISIBLE
#define PASS_MAX 128 /* _PASSWORD_LEN from <pwd.h> */ #define PASS_MAX 128 /* _PASSWORD_LEN from <pwd.h> */
@ -126,7 +92,9 @@
/* glibc's PAGE_MASK is the bitwise negation of BSD's! TODO: remove? */ /* glibc's PAGE_MASK is the bitwise negation of BSD's! TODO: remove? */
#define PAGE_MASK (~(PAGE_SIZE - 1)) #define PAGE_MASK (~(PAGE_SIZE - 1))
#define _POSIX_SEMAPHORES 200809L
#define SEM_VALUE_MAX 0x3fffffff #define SEM_VALUE_MAX 0x3fffffff
/* POSIX says these belong in <unistd.h> but BSD has some in <limits.h>. */
#include <machine/posix_limits.h>
#endif /* !_LIMITS_H_ */ #endif /* !_LIMITS_H_ */

73
libc/include/machine/posix_limits.h Normal file
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@ -0,0 +1,73 @@
/*
* Copyright (C) 2014 The Android Open Source Project
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* * Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* * Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in
* the documentation and/or other materials provided with the
* distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
* FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
* COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
* OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
* AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
* OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
* OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*/
#ifndef _POSIX_LIMITS_H_
#define _POSIX_LIMITS_H_
/* TODO: complete and check these. */
#define _POSIX2_LINE_MAX 2048
#define _POSIX2_RE_DUP_MAX _POSIX_RE_DUP_MAX
#define _POSIX_ARG_MAX 4096
#define _POSIX_CHILD_MAX 25
#define _POSIX_CHOWN_RESTRICTED 1 /* yes, chown requires appropriate privileges */
#define _POSIX_FSYNC 1 /* fdatasync() supported */
#define _POSIX_JOB_CONTROL 1 /* job control is a Linux feature */
#define _POSIX_LINK_MAX 8
#define _POSIX_LOGIN_NAME_MAX 9 /* includes trailing NUL */
#define _POSIX_MAPPED_FILES 1 /* mmap-ed files supported */
#define _POSIX_MAX_CANON 255
#define _POSIX_MAX_INPUT 255
#define _POSIX_MONOTONIC_CLOCK 0 /* the monotonic clock may be available; ask sysconf */
#define _POSIX_NAME_MAX 14
#define _POSIX_NGROUPS_MAX 0
#define _POSIX_NO_TRUNC 1 /* very long pathnames generate an error */
#define _POSIX_OPEN_MAX 16
#define _POSIX_PATH_MAX 256
#define _POSIX_PIPE_BUF 512
#define _POSIX_PRIORITY_SCHEDULING 1 /* priority scheduling is a Linux feature */
#define _POSIX_REALTIME_SIGNALS -1 /* for now, this is not supported */
#define _POSIX_RE_DUP_MAX 255
#define _POSIX_SAVED_IDS 1 /* saved user ids is a Linux feature */
#define _POSIX_SEMAPHORES 200809L
#define _POSIX_SEM_VALUE_MAX 32767
#define _POSIX_SSIZE_MAX 32767
#define _POSIX_STREAM_MAX 8
#define _POSIX_SYMLINK_MAX 255
#define _POSIX_SYMLOOP_MAX 8
#define _POSIX_SYNCHRONIZED_IO 1 /* synchronized i/o supported */
#define _POSIX_THREAD_PRIO_INHERIT 200112L /* linux feature */
#define _POSIX_THREAD_PRIO_PROTECT 200112L /* linux feature */
#define _POSIX_THREADS 1 /* we support threads */
#define _POSIX_THREAD_STACKADDR 1 /* we support thread stack address */
#define _POSIX_THREAD_STACKSIZE 1 /* we support thread stack size */
#define _POSIX_TIMERS 1 /* Posix timers are supported */
#define _POSIX_TTY_NAME_MAX 9 /* includes trailing NUL */
#define _POSIX_TZNAME_MAX 3
#define _POSIX_VDISABLE '\0'
#endif /* _POSIX_LIMITS_H_ */

64
libc/include/pathconf.h
View File

@ -1,64 +0,0 @@
/*
* Copyright (C) 2008 The Android Open Source Project
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* * Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* * Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in
* the documentation and/or other materials provided with the
* distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
* FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
* COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
* OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
* AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
* OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
* OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*/
#ifndef _PATHCONF_H_
#define _PATHCONF_H_
#include <sys/cdefs.h>
__BEGIN_DECLS
/* constants to be used for the 'name' paremeter of pathconf/fpathconf */
#define _PC_FILESIZEBITS 0x0000
#define _PC_LINK_MAX 0x0001
#define _PC_MAX_CANON 0x0002
#define _PC_MAX_INPUT 0x0003
#define _PC_NAME_MAX 0x0004
#define _PC_PATH_MAX 0x0005
#define _PC_PIPE_BUF 0x0006
#define _PC_2_SYMLINKS 0x0007
#define _PC_ALLOC_SIZE_MIN 0x0008
#define _PC_REC_INCR_XFER_SIZE 0x0009
#define _PC_REC_MAX_XFER_SIZE 0x000a
#define _PC_REC_MIN_XFER_SIZE 0x000b
#define _PC_REC_XFER_ALIGN 0x000c
#define _PC_SYMLINK_MAX 0x000d
#define _PC_CHOWN_RESTRICTED 0x000e
#define _PC_NO_TRUNC 0x000f
#define _PC_VDISABLE 0x0010
#define _PC_ASYNC_IO 0x0011
#define _PC_PRIO_IO 0x0012
#define _PC_SYNC_IO 0x0013
extern long fpathconf(int fildes, int name);
extern long pathconf(const char *path, int name);
__END_DECLS
#endif /* _PATHCONF_H_ */

26
libc/include/sys/limits.h
View File

@ -135,31 +135,6 @@
#define _XOPEN_REALTIME -1 /* we don't support all these functions */ #define _XOPEN_REALTIME -1 /* we don't support all these functions */
#define _XOPEN_REALTIME_THREADS -1 /* same here */ #define _XOPEN_REALTIME_THREADS -1 /* same here */
#define _POSIX_REALTIME_SIGNALS -1 /* for now, this is not supported */
#define _POSIX_PRIORITY_SCHEDULING 1 /* priority scheduling is a Linux feature */
#define _POSIX_TIMERS 1 /* Posix timers are supported */
#undef _POSIX_ASYNCHRONOUS_IO /* aio_ functions are not supported */
#define _POSIX_SYNCHRONIZED_IO 1 /* synchronized i/o supported */
#define _POSIX_FSYNC 1 /* fdatasync() supported */
#define _POSIX_MAPPED_FILES 1 /* mmap-ed files supported */
/* XXX: TODO: complete and check list here */
#define _POSIX_THREADS 1 /* we support threads */
#define _POSIX_THREAD_STACKADDR 1 /* we support thread stack address */
#define _POSIX_THREAD_STACKSIZE 1 /* we support thread stack size */
#define _POSIX_THREAD_PRIO_INHERIT 200112L /* linux feature */
#define _POSIX_THREAD_PRIO_PROTECT 200112L /* linux feature */
#undef _POSIX_PROCESS_SHARED /* we don't support process-shared synchronization */
#undef _POSIX_THREAD_SAFE_FUNCTIONS /* most functions are, but not everything yet */
#define _POSIX_CHOWN_RESTRICTED 1 /* yes, chown requires appropriate privileges */
#define _POSIX_MONOTONIC_CLOCK 0 /* the monotonic clock may be available; ask sysconf */
#define _POSIX_NO_TRUNC 1 /* very long pathnames generate an error */
#define _POSIX_SAVED_IDS 1 /* saved user ids is a Linux feature */
#define _POSIX_JOB_CONTROL 1 /* job control is a Linux feature */
#define _POSIX_THREAD_DESTRUCTOR_ITERATIONS 4 /* the minimum mandated by POSIX */ #define _POSIX_THREAD_DESTRUCTOR_ITERATIONS 4 /* the minimum mandated by POSIX */
#define PTHREAD_DESTRUCTOR_ITERATIONS _POSIX_THREAD_DESTRUCTOR_ITERATIONS #define PTHREAD_DESTRUCTOR_ITERATIONS _POSIX_THREAD_DESTRUCTOR_ITERATIONS
#define _POSIX_THREAD_KEYS_MAX 128 /* the minimum mandated by POSIX */ #define _POSIX_THREAD_KEYS_MAX 128 /* the minimum mandated by POSIX */
@ -167,5 +142,4 @@
#define _POSIX_THREAD_THREADS_MAX 64 /* the minimum mandated by POSIX */ #define _POSIX_THREAD_THREADS_MAX 64 /* the minimum mandated by POSIX */
#define PTHREAD_THREADS_MAX /* bionic has no specific limit */ #define PTHREAD_THREADS_MAX /* bionic has no specific limit */
#endif #endif

27
libc/include/unistd.h
View File

@ -34,7 +34,6 @@
#include <sys/types.h> #include <sys/types.h>
#include <sys/select.h> #include <sys/select.h>
#include <sys/sysconf.h> #include <sys/sysconf.h>
#include <pathconf.h>
__BEGIN_DECLS __BEGIN_DECLS
@ -48,6 +47,29 @@ __BEGIN_DECLS
#define SEEK_CUR 1 #define SEEK_CUR 1
#define SEEK_END 2 #define SEEK_END 2
#define _PC_FILESIZEBITS 0
#define _PC_LINK_MAX 1
#define _PC_MAX_CANON 2
#define _PC_MAX_INPUT 3
#define _PC_NAME_MAX 4
#define _PC_PATH_MAX 5
#define _PC_PIPE_BUF 6
#define _PC_2_SYMLINKS 7
#define _PC_ALLOC_SIZE_MIN 8
#define _PC_REC_INCR_XFER_SIZE 9
#define _PC_REC_MAX_XFER_SIZE 10
#define _PC_REC_MIN_XFER_SIZE 11
#define _PC_REC_XFER_ALIGN 12
#define _PC_SYMLINK_MAX 13
#define _PC_CHOWN_RESTRICTED 14
#define _PC_NO_TRUNC 15
#define _PC_VDISABLE 16
#define _PC_ASYNC_IO 17
#define _PC_PRIO_IO 18
#define _PC_SYNC_IO 19
#include <machine/posix_limits.h>
extern char** environ; extern char** environ;
extern __noreturn void _exit(int); extern __noreturn void _exit(int);
@ -96,6 +118,9 @@ extern void setusershell(void);
extern void endusershell(void); extern void endusershell(void);
extern long fpathconf(int, int);
extern long pathconf(const char*, int);
/* Macros for access() */ /* Macros for access() */
#define R_OK 4 /* Read */ #define R_OK 4 /* Read */