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options/posix: Implement fchdir()

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This commit is contained in:
Alexander van der Grinten 2019-08-04 13:46:58 +02:00
parent 5b12c94167
commit 9b0ac5214f
3 changed files with 51 additions and 4 deletions
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1
options/internal/include/mlibc/sysdeps.hpp
View file

@ -102,6 +102,7 @@ int sys_close(int fd);
[[gnu::weak]] int sys_signalfd_create(sigset_t, int flags, int *fd);
[[gnu::weak]] int sys_getcwd(char *buffer, size_t size);
[[gnu::weak]] int sys_chdir(const char *path);
[[gnu::weak]] int sys_fchdir(int fd);
[[gnu::weak]] int sys_chroot(const char *path);
[[gnu::weak]] int sys_mkdir(const char *path);
[[gnu::weak]] int sys_symlink(const char *target_path, const char *link_path);

17
options/posix/generic/unistd-stubs.cpp
View file

@ -29,6 +29,19 @@ int chdir(const char *path) {
return 0;
}
int fchdir(int fd) {
if(!mlibc::sys_fchdir) {
MLIBC_MISSING_SYSDEP();
errno = ENOSYS;
return -1;
}
if(int e = mlibc::sys_fchdir(fd); e) {
errno = e;
return -1;
}
return 0;
}
int chown(const char *path, uid_t uid, gid_t gid) {
mlibc::infoLogger() << "\e[31mmlibc: chown() is not implemented correctly\e[39m"
<< frg::endlog;
@ -143,10 +156,6 @@ int faccessat(int, const char *, int, int) {
__ensure(!"Not implemented");
__builtin_unreachable();
}
int fchdir(int fd) {
__ensure(!"Not implemented");
__builtin_unreachable();
}
int fchown(int fd, uid_t uid, gid_t gid) {
__ensure(!"Not implemented");
__builtin_unreachable();

37
sysdeps/managarm/generic/file.cpp
View file

@ -94,6 +94,43 @@ int sys_chdir(const char *path) {
}
}
int sys_fchdir(int fd) {
SignalGuard sguard;
HelAction actions[3];
globalQueue.trim();
managarm::posix::CntRequest<MemoryAllocator> req(getSysdepsAllocator());
req.set_request_type(managarm::posix::CntReqType::FCHDIR);
req.set_fd(fd);
frigg::String<MemoryAllocator> ser(getSysdepsAllocator());
req.SerializeToString(&ser);
actions[0].type = kHelActionOffer;
actions[0].flags = kHelItemAncillary;
actions[1].type = kHelActionSendFromBuffer;
actions[1].flags = kHelItemChain;
actions[1].buffer = ser.data();
actions[1].length = ser.size();
actions[2].type = kHelActionRecvInline;
actions[2].flags = 0;
HEL_CHECK(helSubmitAsync(getPosixLane(), actions, 3,
globalQueue.getQueue(), 0, 0));
auto element = globalQueue.dequeueSingle();
auto offer = parseSimple(element);
auto send_req = parseSimple(element);
auto recv_resp = parseInline(element);
HEL_CHECK(offer->error);
HEL_CHECK(send_req->error);
HEL_CHECK(recv_resp->error);
managarm::posix::SvrResponse<MemoryAllocator> resp(getSysdepsAllocator());
resp.ParseFromArray(recv_resp->data, recv_resp->length);
__ensure(resp.error() == managarm::posix::Errors::SUCCESS);
return 0;
}
int sys_chroot(const char *path) {
SignalGuard sguard;
HelAction actions[3];