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comparison: src/server/daemon/vfs.h

src/server/daemon/vfs.h

changeset 59
ab25c0a231d0
parent 58
66c22e54aa90
child 63
66442f81f823
equal deleted inserted replaced
58:66c22e54aa90 59:ab25c0a231d0
27 */ 27 */
28 28
29 #ifndef VFS_H 29 #ifndef VFS_H
30 #define VFS_H 30 #define VFS_H
31 31
32 #include "../public/nsapi.h" 32 #include "../public/vfs.h"
33 #include "acl.h"
34 33
35 #ifdef __cplusplus 34 #ifdef __cplusplus
36 extern "C" { 35 extern "C" {
37 #endif 36 #endif
38 37
39 typedef struct VFS_IO VFS_IO; 38 // private
40 typedef struct VFS_DIRIO VFS_DIRIO; 39 int vfs_init();
41 typedef struct VFSFile VFSFile;
42 typedef struct VFSDir VFSDir;
43 typedef struct VFSEntry VFSEntry;
44 40
45 #define VFS_DIR VFSDir*
46 #define VFS_ENTRY VFSEntry
47
48 struct VFS {
49 SYS_FILE (*open)(VFSContext *ctx, char *path, int oflags);
50 int (*stat)(VFSContext *ctx, char *path, struct stat *buf);
51 int (*fstat)(VFSContext *ctx, SYS_FILE fd, struct stat *buf);
52 VFS_DIR (*opendir)(VFSContext *ctx, char *path);
53 int (*mkdir)(VFSContext *ctx, char *path);
54 int (*unlink)(VFSContext *ctx, char *path);
55 };
56
57 struct VFSContext {
58 Session *sn;
59 Request *rq;
60 VFS *vfs;
61 pool_handle_t *pool;
62 User *user;
63 ACLListHandle *acllist;
64 uint32_t aclreqaccess;
65 int vfs_errno;
66 };
67
68 struct VFSFile {
69 VFSContext *ctx;
70 VFS_IO *io; // IO functions
71 void *data; // private data used by the VFSFile implementation
72 int fd; // native file descriptor if available, or -1
73 };
74
75 struct VFSDir {
76 VFSContext *ctx;
77 VFS_DIRIO *io;
78 void *data; // private data used by the VFSDir implementation
79 int fd; // native file descriptor if available, or -1
80 };
81
82 struct VFSEntry {
83 char *name;
84 struct stat stat;
85 void *stat_extra;
86 int stat_errno;
87 };
88
89 struct VFS_IO {
90 ssize_t (*read)(SYS_FILE fd, void *buf, size_t nbyte);
91 ssize_t (*write)(SYS_FILE fd, const void *buf, size_t nbyte);
92 void (*close)(SYS_FILE fd);
93 };
94
95 struct VFS_DIRIO {
96 int (*readdir)(VFS_DIR dir, VFS_ENTRY *entry, int getstat);
97 void (*close)(VFS_DIR dir);
98 };
99
100 /*
101 * creates a VFSContext for a Request
102 * vfs calls will do ACL checks
103 */
104 VFSContext* vfs_request_context(Session *sn, Request *rq);
105
106 SYS_FILE vfs_open(VFSContext *ctx, char *path, int oflags);
107 SYS_FILE vfs_openRO(VFSContext *ctx, char *path);
108 SYS_FILE vfs_openWO(VFSContext *ctx, char *path);
109 SYS_FILE vfs_openRW(VFSContext *ctx, char *path);
110 int vfs_stat(VFSContext *ctx, char *path, struct stat *buf);
111 int vfs_fstat(VFSContext *ctx, SYS_FILE fd, struct stat *buf);
112 void vfs_close(SYS_FILE fd);
113 VFS_DIR vfs_opendir(VFSContext *ctx, char *path);
114 int vfs_readdir(VFS_DIR dir, VFS_ENTRY *entry);
115 int vfs_readdir_stat(VFS_DIR dir, VFS_ENTRY *entry);
116 void vfs_closedir(VFS_DIR dir);
117 int vfs_mkdir(VFSContext *ctx, char *path);
118 int vfs_unlink(VFSContext *ctx, char *path);
119
120 // private
121 typedef int(*vfs_op_f)(VFSContext *, char *); 41 typedef int(*vfs_op_f)(VFSContext *, char *);
122 int vfs_path_op(VFSContext *ctx, char *path, vfs_op_f op, uint32_t access); 42 int vfs_path_op(VFSContext *ctx, char *path, vfs_op_f op, uint32_t access);
123 43
124 int sys_acl_check(VFSContext *ctx, uint32_t acm, uid_t *uid, gid_t *gid); 44 int sys_acl_check(VFSContext *ctx, uint32_t acm, uid_t *uid, gid_t *gid);
125 void sys_set_error_status(VFSContext *ctx); 45 void sys_set_error_status(VFSContext *ctx);

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