tapefs.h (1846B)
1 #define getpass tapefs_getpass 2 3 #define g2byte(x) (((x)[1]<<8) + (x)[0]) /* little-endian */ 4 #define g3byte(x) (((x)[2]<<16) + ((x)[1]<<8) + (x)[0]) 5 #define g4byte(x) (((x)[3]<<24) + ((x)[2]<<16) + ((x)[1]<<8) + (x)[0]) 6 7 /* big endian */ 8 #define b4byte(x) (((x)[0]<<24) + ((x)[1]<<16) + ((x)[2]<<8) + (x)[3]) 9 #define b8byte(x) (((vlong)b4byte(x)<<32) | (u32int)b4byte((x)+4)) 10 11 enum 12 { 13 OPERM = 0x3, /* mask of all permission types in open mode */ 14 Nram = 512, 15 Maxbuf = 8192 /* max buffer size */ 16 }; 17 18 typedef struct Fid Fid; 19 typedef struct Ram Ram; 20 21 struct Fid 22 { 23 short busy; 24 short open; 25 short rclose; 26 int fid; 27 Fid *next; 28 char *user; 29 Ram *ram; 30 }; 31 32 struct Ram 33 { 34 char busy; 35 char open; 36 char replete; 37 Ram *parent; /* parent directory */ 38 Ram *child; /* first member of directory */ 39 Ram *next; /* next member of file's directory */ 40 Qid qid; 41 long perm; 42 char *name; 43 ulong atime; 44 ulong mtime; 45 char *user; 46 char *group; 47 vlong addr; 48 void *data; 49 vlong ndata; 50 }; 51 52 enum 53 { 54 Pexec = 1, 55 Pwrite = 2, 56 Pread = 4, 57 Pother = 1, 58 Pgroup = 8, 59 Powner = 64 60 }; 61 62 typedef struct idmap { 63 char *name; 64 int id; 65 } Idmap; 66 67 typedef struct fileinf { 68 char *name; 69 vlong addr; 70 void *data; 71 vlong size; 72 int mode; 73 int uid; 74 int gid; 75 long mdate; 76 } Fileinf; 77 78 extern ulong path; /* incremented for each new file */ 79 extern Ram *ram; 80 extern char *user; 81 extern Idmap *uidmap; 82 extern Idmap *gidmap; 83 extern int replete; 84 extern int blocksize; 85 void error(char*); 86 void *erealloc(void*, ulong); 87 void *emalloc(ulong); 88 char *estrdup(char*); 89 void populate(char *); 90 void dotrunc(Ram*); 91 void docreate(Ram*); 92 char *doread(Ram*, vlong, long); 93 void dowrite(Ram*, char*, long, long); 94 int dopermw(Ram*); 95 Idmap *getpass(char*); 96 char *mapid(Idmap*,int); 97 Ram *poppath(Fileinf fi, int new); 98 Ram *popfile(Ram *dir, Fileinf fi); 99 void popdir(Ram*); 100 Ram *lookup(Ram*, char*);