projects / dragonfly.git / blame
| Commit | Line | Data |
|---|---|---|
| 98a7f915 MD |
1 | /* |
| 2 | * SYS/VARSYM.H | |
| 3 | * | |
| 4 | * Implements structures used for variant symlink support. | |
| 5 | * | |
| 3df22e80 | 6 | * $DragonFly: src/sys/sys/varsym.h,v 1.7 2008/02/23 00:59:23 swildner Exp $ |
| 98a7f915 MD |
7 | */ |
| 8 | ||
| 9 | #ifndef _SYS_VARSYM_H_ | |
| 10 | #define _SYS_VARSYM_H_ | |
| 11 | ||
| e3dd2e77 | 12 | #if defined(_KERNEL) || defined(_KERNEL_STRUCTURES) |
| 98a7f915 MD |
13 | |
| 14 | #ifndef _SYS_QUEUE_H_ | |
| 15 | #include <sys/queue.h> /* TAILQ_* macros */ | |
| 16 | #endif | |
| 17 | ||
| 9d7a637e AE |
18 | #include <sys/lock.h> |
| 19 | ||
| 98a7f915 MD |
20 | struct varsym { |
| 21 | int vs_refs; /* a lot of sharing occurs */ | |
| 22 | int vs_namelen; | |
| 23 | char *vs_name; /* variable name */ | |
| 24 | char *vs_data; /* variable contents */ | |
| 25 | }; | |
| 26 | ||
| 27 | typedef struct varsym *varsym_t; | |
| 28 | ||
| 29 | struct varsyment { | |
| 30 | TAILQ_ENTRY(varsyment) ve_entry; | |
| 31 | varsym_t ve_sym; | |
| 32 | }; | |
| 33 | ||
| 34 | struct varsymset { | |
| 35 | TAILQ_HEAD(, varsyment) vx_queue; | |
| 36 | int vx_setsize; | |
| 9d7a637e | 37 | struct lock vx_lock; |
| 98a7f915 MD |
38 | }; |
| 39 | ||
| 40 | #endif /* _KERNEL || _KERNEL_STRUCTURES */ | |
| 41 | ||
| 42 | #define VARSYM_PROC 1 | |
| 43 | #define VARSYM_USER 2 | |
| 44 | #define VARSYM_SYS 3 | |
| dbc282df | 45 | #define VARSYM_PRISON 4 /* used internally */ |
| 98a7f915 MD |
46 | |
| 47 | #define VARSYM_PROC_MASK (1 << VARSYM_PROC) | |
| 48 | #define VARSYM_USER_MASK (1 << VARSYM_USER) | |
| 49 | #define VARSYM_SYS_MASK (1 << VARSYM_SYS) | |
| 50 | #define VARSYM_ALL_MASK (VARSYM_PROC_MASK|VARSYM_USER_MASK|VARSYM_SYS_MASK) | |
| 51 | ||
| 52 | #define MAXVARSYM_NAME 64 | |
| 53 | #define MAXVARSYM_DATA 256 | |
| 92673705 | 54 | #define MAXVARSYM_SET 16384 |
| 98a7f915 MD |
55 | |
| 56 | #ifdef _KERNEL | |
| 57 | ||
| 58 | varsym_t varsymfind(int mask, const char *name, int namelen); | |
| 59 | int varsymmake(int level, const char *name, const char *data); | |
| 60 | void varsymdrop(varsym_t var); | |
| 61 | void varsymset_init(struct varsymset *varsymset, struct varsymset *copy); | |
| 62 | void varsymset_clean(struct varsymset *varsymset); | |
| 063147e5 | 63 | int varsymreplace(char *cp, int linklen, int maxlen); |
| 98a7f915 | 64 | |
| 3df22e80 SW |
65 | #endif /* _KERNEL */ |
| 66 | ||
| 98a7f915 | 67 | #endif |