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Add pathconf(3).

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This commit is contained in:
Jonas 'Sortie' Termansen 2013-03-22 13:58:43 +01:00
parent 6da33c469b
commit c6d1285337
3 changed files with 62 additions and 2 deletions
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1
libc/Makefile
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@ -220,6 +220,7 @@ mktemp.o \
on_exit.o \
openat.o \
open.o \
pathconf.o \
pipe.o \
poll.o \
popen.o \

24
libc/include/unistd.h
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@ -61,7 +61,27 @@ __BEGIN_DECLS
/* TODO: F_* is missing here. */
/* TODO: _PC_* is missing here. */
#define _PC_2_SYMLINKS 1
#define _PC_ALLOC_SIZE_MIN 2
#define _PC_ASYNC_IO 3
#define _PC_CHOWN_RESTRICTED 4
#define _PC_FILESIZEBITS 5
#define _PC_LINK_MAX 6
#define _PC_MAX_CANON 7
#define _PC_MAX_INPUT 8
#define _PC_NAME_MAX 9
#define _PC_NO_TRUNC 10
#define _PC_PATH_MAX 11
#define _PC_PIPE_BUF 12
#define _PC_PRIO_IO 13
#define _PC_REC_INCR_XFER_SIZE 14
#define _PC_REC_MAX_XFER_SIZE 15
#define _PC_REC_MIN_XFER_SIZE 16
#define _PC_REC_XFER_ALIGN 17
#define _PC_SYMLINK_MAX 18
#define _PC_SYNC_IO 19
#define _PC_TIMESTAMP_RESOLUTION 20
#define _PC_VDISABLE 21
/* TODO: _SC_* is missing here. */
@ -104,7 +124,6 @@ pid_t getpgrp(void);
pid_t getsid(pid_t);
int lockf(int, int, off_t);
int nice(int);
long pathconf(const char*, int);
int pause(void);
int setpgid(pid_t, pid_t);
int setregid(gid_t, gid_t);
@ -161,6 +180,7 @@ int lchown(const char*, uid_t, gid_t);
int link(const char*, const char*);
int linkat(int, const char*, int, const char*, int);
off_t lseek(int, off_t, int);
long pathconf(const char*, int);
int pipe(int [2]);
ssize_t pread(int, void*, size_t, off_t);
ssize_t pwrite(int, const void*, size_t, off_t);

39
libc/pathconf.cpp Normal file
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@ -0,0 +1,39 @@
/*******************************************************************************
Copyright(C) Jonas 'Sortie' Termansen 2013.
This file is part of the Sortix C Library.
The Sortix C Library is free software: you can redistribute it and/or modify
it under the terms of the GNU Lesser General Public License as published by
the Free Software Foundation, either version 3 of the License, or (at your
option) any later version.
The Sortix C Library is distributed in the hope that it will be useful, but
WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public
License for more details.
You should have received a copy of the GNU Lesser General Public License
along with the Sortix C Library. If not, see <http://www.gnu.org/licenses/>.
pathconf.cpp
Get configurable pathname variables.
*******************************************************************************/
#include <errno.h>
#include <stdio.h>
#include <unistd.h>
extern "C" long pathconf(const char* path, int name)
{
switch ( name )
{
case _PC_PATH_MAX: return -1; // Unbounded
default:
fprintf(stderr, "%s:%u warning: %s(\"%s\", %i) is unsupported\n",
__FILE__, __LINE__, __func__, path, name);
return errno = EINVAL, -1;
}
}