75 lines
2.0 KiB
C
75 lines
2.0 KiB
C
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/*
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* This file is part of Jehanne.
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*
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* Copyright (C) 2017 Giacomo Tesio <giacomo@tesio.it>
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*
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* This is free software: you can redistribute it and/or modify
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* it under the terms of the GNU Affero General Public License as
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* published by the Free Software Foundation, version 3 of the License.
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*
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* Jehanne is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU Affero General Public License
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* along with Jehanne. If not, see <http://www.gnu.org/licenses/>.
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*/
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#include <u.h>
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#include <lib9.h>
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#include <9P2000.h>
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#include <posix.h>
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#include "internal.h"
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int
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POSIX_lchown(int *errnop, const char *path, int owner, int group)
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{
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/* TODO: implement when actually needed */
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return 0;
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}
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int
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POSIX_link(int *errnop, const char *old, const char *new)
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{
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int err;
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/* let choose the most appropriate error */
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if(old == nil || new == nil || old[0] == 0 || new[0] == 0)
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err = __libposix_get_errno(PosixENOENT);
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else if(access(new, AEXIST) == 0)
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err = __libposix_get_errno(PosixEEXIST);
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else if(access(old, AEXIST) == 0)
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err = __libposix_get_errno(PosixENOENT);
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else {
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/* Jehanne does not support links.
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* A custom overlay filesystem might support them in
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* the future but so far it does not exists yet.
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*
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* We return EXDEV so that a posix compliant caller
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* can fallback to a simple copy.
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*/
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err = __libposix_get_errno(PosixEXDEV);
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}
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*errnop = err;
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return -1;
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}
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int
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POSIX_lstat(int *errnop, const char *file, void *pstat)
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{
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return POSIX_stat(errnop, file, pstat);
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}
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int
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POSIX_readlink(int *errnop, const char *path, char *buf, int bufsize)
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{
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*errnop = __libposix_get_errno(PosixEINVAL);
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return -1;
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}
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int
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POSIX_readlinkat(int *errnop, int fd, const char *path, char *buf, int bufsize)
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{
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*errnop = __libposix_get_errno(PosixEINVAL);
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return -1;
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}
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