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Renamed fs_query.c to fs_query.cpp and implemented the function. They don't work yet as the kernel part is not implemented yet.

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git-svn-id: file:///srv/svn/repos/haiku/trunk/current@8700 a95241bf-73f2-0310-859d-f6bbb57e9c96
This commit is contained in:
Ingo Weinhold 2004-08-28 20:36:53 +00:00
parent 6fec58934a
commit c46de31dea
2 changed files with 124 additions and 64 deletions
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64
src/kernel/libroot/os/fs_query.c
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@ -1,64 +0,0 @@
/*
** Copyright 2004, Axel Dörfler, axeld@pinc-software.de. All rights reserved.
** Distributed under the terms of the Haiku License.
*/
#include <fs_query.h>
#include <stdlib.h>
#include <fcntl.h>
#include <errno.h>
#include "syscalls.h"
// ToDo: implement these for real - the VFS functions are still missing!
#define RETURN_AND_SET_ERRNO(status) \
{ \
if (status < 0) { \
errno = status; \
return -1; \
} \
return status; \
}
// for the DIR structure
#define BUFFER_SIZE 2048
DIR *
fs_open_query(dev_t device, const char *query, uint32 flags)
{
return NULL;
}
DIR *
fs_open_live_query(dev_t device, const char *query,
uint32 flags, port_id port, int32 token)
{
return NULL;
}
int
fs_close_query(DIR *d)
{
return 0;
}
struct dirent *
fs_read_query(DIR *d)
{
return NULL;
}
status_t
get_path_for_dirent(struct dirent *dent, char *buf, size_t len)
{
return B_ERROR;
}

124
src/kernel/libroot/os/fs_query.cpp Normal file
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@ -0,0 +1,124 @@
/*
** Copyright 2004, Axel Dörfler, axeld@pinc-software.de. All rights reserved.
** Distributed under the terms of the Haiku License.
*/
#include <fs_query.h>
#include <stdlib.h>
#include <fcntl.h>
#include <errno.h>
#include "syscalls.h"
#define RETURN_AND_SET_ERRNO(status) \
{ \
if (status < 0) { \
errno = status; \
return -1; \
} \
return status; \
}
// for the DIR structure
#define BUFFER_SIZE 2048
DIR *
fs_open_query(dev_t device, const char *query, uint32 flags)
{
// check parameters
if (device < 0 || !query) {
errno = B_BAD_VALUE;
return NULL;
}
// open
int fd = _kern_open_query(device, query, flags, -1, -1);
if (fd < 0) {
errno = fd;
return NULL;
}
// allocate a DIR
DIR *dir = (DIR*)malloc(BUFFER_SIZE);
if (!dir) {
_kern_close(fd);
errno = B_NO_MEMORY;
return NULL;
}
dir->fd = fd;
return dir;
}
DIR *
fs_open_live_query(dev_t device, const char *query,
uint32 flags, port_id port, int32 token)
{
// check parameters
if (device < 0 || !query || port < 0) {
errno = B_BAD_VALUE;
return NULL;
}
flags |= B_LIVE_QUERY;
// open
int fd = _kern_open_query(device, query, flags, port, token);
if (fd < 0) {
errno = fd;
return NULL;
}
// allocate a DIR
DIR *dir = (DIR*)malloc(BUFFER_SIZE);
if (!dir) {
_kern_close(fd);
errno = B_NO_MEMORY;
return NULL;
}
dir->fd = fd;
return dir;
}
int
fs_close_query(DIR *d)
{
if (!d)
RETURN_AND_SET_ERRNO(B_BAD_VALUE);
int fd = d->fd;
free(d);
return _kern_close(fd);
}
struct dirent *
fs_read_query(DIR *d)
{
// check parameters
if (!d) {
errno = B_BAD_VALUE;
return NULL;
}
// read
int32 bufferSize = BUFFER_SIZE - ((uint8*)&d->ent - (uint8*)d);
ssize_t result = _kern_read_dir(d->fd, &d->ent, bufferSize, 1);
if (result < 0) {
errno = result;
return NULL;
}
if (result == 0) {
errno = B_ENTRY_NOT_FOUND;
return NULL;
}
return &d->ent;
}
status_t
get_path_for_dirent(struct dirent *dent, char *buf, size_t len)
{
if (!dent || !buf)
return B_BAD_VALUE;
return _kern_entry_ref_to_path(dent->d_pdev, dent->d_pino, dent->d_name,
buf, len);
}