1 /* 2 * SYS/VARSYM.H 3 * 4 * Implements structures used for variant symlink support. 5 * 6 * $DragonFly: src/sys/sys/varsym.h,v 1.7 2008/02/23 00:59:23 swildner Exp $ 7 */ 8 9 #ifndef _SYS_VARSYM_H_ 10 #define _SYS_VARSYM_H_ 11 12 /*#if defined(_KERNEL) || defined(_KERNEL_STRUCTURES) FUTURE */ 13 #if 1 14 15 #ifndef _SYS_QUEUE_H_ 16 #include <sys/queue.h> /* TAILQ_* macros */ 17 #endif 18 19 struct varsym { 20 int vs_refs; /* a lot of sharing occurs */ 21 int vs_namelen; 22 char *vs_name; /* variable name */ 23 char *vs_data; /* variable contents */ 24 }; 25 26 typedef struct varsym *varsym_t; 27 28 struct varsyment { 29 TAILQ_ENTRY(varsyment) ve_entry; 30 varsym_t ve_sym; 31 }; 32 33 struct varsymset { 34 TAILQ_HEAD(, varsyment) vx_queue; 35 int vx_setsize; 36 }; 37 38 #endif /* _KERNEL || _KERNEL_STRUCTURES */ 39 40 #define VARSYM_PROC 1 41 #define VARSYM_USER 2 42 #define VARSYM_SYS 3 43 #define VARSYM_PRISON 4 /* used internally */ 44 45 #define VARSYM_PROC_MASK (1 << VARSYM_PROC) 46 #define VARSYM_USER_MASK (1 << VARSYM_USER) 47 #define VARSYM_SYS_MASK (1 << VARSYM_SYS) 48 #define VARSYM_ALL_MASK (VARSYM_PROC_MASK|VARSYM_USER_MASK|VARSYM_SYS_MASK) 49 50 #define MAXVARSYM_NAME 64 51 #define MAXVARSYM_DATA 256 52 #define MAXVARSYM_SET 8192 53 54 #ifdef _KERNEL 55 56 varsym_t varsymfind(int mask, const char *name, int namelen); 57 int varsymmake(int level, const char *name, const char *data); 58 void varsymdrop(varsym_t var); 59 void varsymset_init(struct varsymset *varsymset, struct varsymset *copy); 60 void varsymset_clean(struct varsymset *varsymset); 61 int varsymreplace(char *cp, int linklen, int maxlen); 62 63 #endif /* _KERNEL */ 64 65 #endif 66