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1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 | /* * Dynamic loading of modules into the kernel. * * Modified by Bjorn Ekwall <bj0rn@blox.se> */ #ifndef _LINUX_MODULE_H #define _LINUX_MODULE_H #ifdef __GENKSYMS__ # define _set_ver(sym,vers) sym # undef MODVERSIONS # define MODVERSIONS #else /* ! __GENKSYMS__ */ # if defined(MODVERSIONS) && !defined(MODULE) && defined(EXPORT_SYMTAB) # define _set_ver(sym,vers) sym # include <linux/modversions.h> # endif #endif /* __GENKSYMS__ */ /* values of module.state */ #define MOD_UNINITIALIZED 0 #define MOD_RUNNING 1 #define MOD_DELETED 2 /* maximum length of module name */ #define MOD_MAX_NAME 64 /* magic marker for modules inserted from kerneld, to be auto-reaped */ #define MOD_AUTOCLEAN 0x40000000 /* big enough, but no sign problems... */ #define MOD_VISITED 0x20000000 /* Thanks Jacques! */ /* maximum length of symbol name */ #define SYM_MAX_NAME 60 struct kernel_sym { /* sent to "insmod" */ unsigned long value; /* value of symbol */ char name[SYM_MAX_NAME]; /* name of symbol */ }; struct module_ref { struct module *module; struct module_ref *next; }; struct internal_symbol { void *addr; const char *name; }; struct symbol_table { /* received from "insmod" */ int size; /* total, including string table!!! */ int n_symbols; int n_refs; struct internal_symbol symbol[0]; /* actual size defined by n_symbols */ struct module_ref ref[0]; /* actual size defined by n_refs */ }; /* * Note: The string table follows immediately after the symbol table in memory! */ struct module { struct module *next; struct module_ref *ref; /* the list of modules that refer to me */ struct symbol_table *symtab; const char *name; int size; /* size of module in pages */ void* addr; /* address of module */ int state; void (*cleanup)(void); /* cleanup routine */ }; struct mod_routines { int (*init)(void); /* initialization routine */ void (*cleanup)(void); /* cleanup routine */ }; /* * The first word of the module contains the use count. */ #define GET_USE_COUNT(module) (* (long *) (module)->addr) /* * define the count variable, and usage macros. */ #ifdef MODULE extern long mod_use_count_; #define MOD_INC_USE_COUNT (mod_use_count_++, mod_use_count_ |= MOD_VISITED) #define MOD_DEC_USE_COUNT (mod_use_count_--, mod_use_count_ |= MOD_VISITED) #define MOD_IN_USE ((mod_use_count_ & ~(MOD_AUTOCLEAN | MOD_VISITED)) != 0) #ifndef __NO_VERSION__ #include <linux/version.h> char kernel_version[]=UTS_RELEASE; #endif #if defined(MODVERSIONS) && !defined(__GENKSYMS__) int Using_Versions; /* gcc will handle this global (used as a flag) correctly */ #endif #else #define MOD_INC_USE_COUNT do { } while (0) #define MOD_DEC_USE_COUNT do { } while (0) #define MOD_IN_USE 1 #endif /* insert new symbol table */ extern int register_symtab_from(struct symbol_table *, long *); extern void *get_module_symbol(char *, char *); #ifdef MODULE #define register_symtab(symtab) register_symtab_from(symtab, &mod_use_count_) #else #define register_symtab(symtab) register_symtab_from(symtab, 0) #endif #endif |