1/* 2 * Copyright 2004-2008, Axel D��rfler, axeld@pinc-software.de. 3 * Distributed under the terms of the MIT License. 4 */ 5 6 7#include <fs_query.h> 8 9#include <dirent.h> 10#include <errno.h> 11#include <fcntl.h> 12#include <stdlib.h> 13#include <string.h> 14 15#include <dirent_private.h> 16#include <errno_private.h> 17#include <syscalls.h> 18#include <syscall_utils.h> 19 20 21static DIR * 22open_query_etc(dev_t device, const char *query, 23 uint32 flags, port_id port, int32 token) 24{ 25 if (device < 0 || query == NULL || query[0] == '\0') { 26 __set_errno(B_BAD_VALUE); 27 return NULL; 28 } 29 30 // open 31 int fd = _kern_open_query(device, query, strlen(query), flags, port, token); 32 if (fd < 0) { 33 __set_errno(fd); 34 return NULL; 35 } 36 37 // allocate the DIR structure 38 DIR *dir = __create_dir_struct(fd); 39 if (dir == NULL) { 40 _kern_close(fd); 41 return NULL; 42 } 43 44 return dir; 45} 46 47 48DIR * 49fs_open_query(dev_t device, const char *query, uint32 flags) 50{ 51 return open_query_etc(device, query, flags, -1, -1); 52} 53 54 55DIR * 56fs_open_live_query(dev_t device, const char *query, 57 uint32 flags, port_id port, int32 token) 58{ 59 // check parameters 60 if (port < 0) { 61 __set_errno(B_BAD_VALUE); 62 return NULL; 63 } 64 65 return open_query_etc(device, query, flags | B_LIVE_QUERY, port, token); 66} 67 68 69int 70fs_close_query(DIR *dir) 71{ 72 return closedir(dir); 73} 74 75 76struct dirent * 77fs_read_query(DIR *dir) 78{ 79 return readdir(dir); 80} 81 82 83status_t 84get_path_for_dirent(struct dirent *dent, char *buffer, size_t length) 85{ 86 if (dent == NULL || buffer == NULL) 87 return B_BAD_VALUE; 88 89 return _kern_entry_ref_to_path(dent->d_pdev, dent->d_pino, dent->d_name, 90 buffer, length); 91} 92 93