1 /* 2 * 9p 3 * 4 * Copyright IBM, Corp. 2011 5 * 6 * Authors: 7 * Aneesh Kumar K.V <aneesh.kumar@linux.vnet.ibm.com> 8 * 9 * This work is licensed under the terms of the GNU GPL, version 2. See 10 * the COPYING file in the top-level directory. 11 * 12 */ 13 14 #ifndef QEMU_9P_SYNTH_H 15 #define QEMU_9P_SYNTH_H 16 17 typedef struct V9fsSynthNode V9fsSynthNode; 18 typedef ssize_t (*v9fs_synth_read)(void *buf, int len, off_t offset, 19 void *arg); 20 typedef ssize_t (*v9fs_synth_write)(void *buf, int len, off_t offset, 21 void *arg); 22 typedef struct V9fsSynthNodeAttr { 23 int mode; 24 int inode; 25 int nlink; 26 v9fs_synth_read read; 27 v9fs_synth_write write; 28 } V9fsSynthNodeAttr; 29 30 struct V9fsSynthNode { 31 QLIST_HEAD(, V9fsSynthNode) child; 32 QLIST_ENTRY(V9fsSynthNode) sibling; 33 char name[NAME_MAX]; 34 V9fsSynthNodeAttr *attr; 35 V9fsSynthNodeAttr actual_attr; 36 void *private; 37 int open_count; 38 }; 39 40 typedef struct V9fsSynthOpenState { 41 off_t offset; 42 V9fsSynthNode *node; 43 struct dirent dent; 44 /* 45 * Ensure there is enough space for 'dent' above, some systems have a 46 * d_name size of just 1, which would cause a buffer overrun. 47 */ 48 char dent_trailing_space[NAME_MAX]; 49 } V9fsSynthOpenState; 50 51 int qemu_v9fs_synth_mkdir(V9fsSynthNode *parent, int mode, 52 const char *name, V9fsSynthNode **result); 53 int qemu_v9fs_synth_add_file(V9fsSynthNode *parent, int mode, 54 const char *name, v9fs_synth_read read, 55 v9fs_synth_write write, void *arg); 56 57 /* qtest stuff */ 58 59 #define QTEST_V9FS_SYNTH_WALK_FILE "WALK%d" 60 #define QTEST_V9FS_SYNTH_LOPEN_FILE "LOPEN" 61 #define QTEST_V9FS_SYNTH_WRITE_FILE "WRITE" 62 63 /* for READDIR test */ 64 #define QTEST_V9FS_SYNTH_READDIR_DIR "ReadDirDir" 65 #define QTEST_V9FS_SYNTH_READDIR_FILE "ReadDirFile%d" 66 #define QTEST_V9FS_SYNTH_READDIR_NFILES 100 67 68 /* Any write to the "FLUSH" file is handled one byte at a time by the 69 * backend. If the byte is zero, the backend returns success (ie, 1), 70 * otherwise it forces the server to try again forever. Thus allowing 71 * the client to cancel the request. 72 */ 73 #define QTEST_V9FS_SYNTH_FLUSH_FILE "FLUSH" 74 75 #endif 76