Add chown(3).
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a11439bc87
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5 changed files with 55 additions and 2 deletions
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@ -116,6 +116,7 @@ HOSTEDOBJS=\
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access.o \
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chdir.o \
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chmod.o \
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chown.o \
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clock.o \
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close.o \
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$(CPUDIR)/fork.o \
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34
libc/chown.cpp
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34
libc/chown.cpp
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@ -0,0 +1,34 @@
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/*******************************************************************************
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Copyright(C) Jonas 'Sortie' Termansen 2012.
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This file is part of the Sortix C Library.
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The Sortix C Library is free software: you can redistribute it and/or modify
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it under the terms of the GNU Lesser General Public License as published by
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the Free Software Foundation, either version 3 of the License, or (at your
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option) any later version.
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The Sortix C Library is distributed in the hope that it will be useful, but
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WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
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or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public
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License for more details.
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You should have received a copy of the GNU Lesser General Public License
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along with the Sortix C Library. If not, see <http://www.gnu.org/licenses/>.
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chown.cpp
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Changes the owner and group of a file.
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*******************************************************************************/
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#include <sys/types.h>
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#include <sys/syscall.h>
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#include <unistd.h>
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DEFN_SYSCALL3(int, sys_chown, SYSCALL_CHOWN, const char*, uid_t, gid_t);
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extern "C" int chown(const char* path, uid_t owner, gid_t group)
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{
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return sys_chown(path, owner, group);
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}
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@ -88,7 +88,6 @@ extern char** environ;
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/* TODO: These are not implemented in sortix libc yet. */
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#if defined(__SORTIX_SHOW_UNIMPLEMENTED)
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unsigned alarm(unsigned);
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int chown(const char*, uid_t, gid_t);
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size_t confstr(int, char*, size_t);
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char* crypt(const char*, const char*);
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char* ctermid(char*);
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@ -153,6 +152,7 @@ extern int opterr, optind, optopt;
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int access(const char*, int);
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int chdir(const char*);
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int chown(const char*, uid_t, gid_t);
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int close(int);
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int dup(int);
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void _exit(int) __attribute__ ((noreturn));
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@ -79,6 +79,7 @@
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#define SYSCALL_DISPMSG_ISSUE 55
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#define SYSCALL_FSTATAT 56
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#define SYSCALL_CHMOD 57
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#define SYSCALL_MAX_NUM 58 /* index of highest constant + 1 */
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#define SYSCALL_CHOWN 58
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#define SYSCALL_MAX_NUM 59 /* index of highest constant + 1 */
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#endif
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@ -317,6 +317,22 @@ static int sys_chdir(const char* path)
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return 0;
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}
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static int sys_chown(const char* path, uid_t owner, gid_t group)
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{
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char* pathcopy = GetStringFromUser(path);
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if ( !pathcopy )
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return -1;
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ioctx_t ctx; SetupUserIOCtx(&ctx);
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const char* relpath = pathcopy;
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Ref<Descriptor> from = PrepareLookup(&relpath);
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Ref<Descriptor> desc = from->open(&ctx, relpath, O_WRONLY);
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from.Reset();
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delete[] pathcopy;
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if ( !desc )
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return -1;
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return desc->chown(&ctx, owner, group);
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}
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static int sys_chmod(const char* path, mode_t mode)
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{
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char* pathcopy = GetStringFromUser(path);
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@ -374,6 +390,7 @@ void Init()
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Syscall::Register(SYSCALL_ACCESS, (void*) sys_access);
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Syscall::Register(SYSCALL_CHDIR, (void*) sys_chdir);
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Syscall::Register(SYSCALL_CHMOD, (void*) sys_chmod);
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Syscall::Register(SYSCALL_CHOWN, (void*) sys_chown);
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Syscall::Register(SYSCALL_CLOSE, (void*) sys_close);
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Syscall::Register(SYSCALL_DUP, (void*) sys_dup);
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Syscall::Register(SYSCALL_FCNTL, (void*) sys_fcntl);
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