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options/posix: Implement ftruncate()

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This commit is contained in:
Alexander van der Grinten 2018-02-19 00:00:05 +01:00
parent a047553581
commit 14d41a3b42
3 changed files with 45 additions and 4 deletions
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1
options/internal/include/mlibc/sysdeps.hpp
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@ -28,6 +28,7 @@ int sys_isatty(int fd, int *ptr);
int sys_stat(const char *pathname, struct stat *statbuf);
int sys_fstat(int fd, struct stat *statbuf);
int sys_readlink(const char *path, void *buffer, size_t max_size, ssize_t *length);
int sys_ftruncate(int fd, size_t size);
int sys_fallocate(int fd, off_t offset, size_t size);
int sys_unlink(const char *path);
int sys_socket(int family, int type, int protocol, int *fd);

7
options/posix/generic/unistd-stubs.cpp
View file

@ -98,9 +98,10 @@ int fsync(int) {
__ensure(!"Not implemented");
__builtin_unreachable();
}
int ftruncate(int, off_t) {
__ensure(!"Not implemented");
__builtin_unreachable();
int ftruncate(int fd, off_t size) {
if(mlibc::sys_ftruncate(fd, size))
return -1;
return 0;
}
char *getcwd(char *, size_t) {
__ensure(!"Not implemented");

41
sysdeps/managarm/generic/file.cpp
View file

@ -298,7 +298,7 @@ int sys_vm_map(void *hint, size_t size, int prot, int flags, int fd, off_t offse
}
int sys_vm_unmap(void *pointer, size_t size) {
HEL_CHECK(helUnmapMemory(kHelNullHandle, pointer, size));
HEL_CHECK(helUnmapMemory(kHelNullHandle, pointer, (size + 0xFFF) & ~size_t(0xFFF)));
return 0;
}
@ -1938,6 +1938,45 @@ int sys_readlink(const char *path, void *data, size_t max_size, ssize_t *length)
}
}
int sys_ftruncate(int fd, size_t size) {
HelAction actions[3];
globalQueue.trim();
auto handle = cacheFileTable()[fd];
__ensure(handle);
managarm::fs::CntRequest<MemoryAllocator> req(getAllocator());
req.set_req_type(managarm::fs::CntReqType::PT_TRUNCATE);
req.set_size(size);
frigg::String<MemoryAllocator> ser(getAllocator());
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(handle, 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::fs::SvrResponse<MemoryAllocator> resp(getAllocator());
resp.ParseFromArray(recv_resp->data, recv_resp->length);
__ensure(resp.error() == managarm::fs::Errors::SUCCESS);
return 0;
}
int sys_fallocate(int fd, off_t offset, size_t size) {
HelAction actions[3];
globalQueue.trim();