user_syms.c

来自「Linux Kernel 2.6.9 for OMAP1710」· C语言 代码 · 共 91 行

#include "linux/types.h"
#include "linux/module.h"

/* Some of this are builtin function (some are not but could in the future),
 * so I *must* declare good prototypes for them and then EXPORT them.
 * The kernel code uses the macro defined by include/linux/string.h,
 * so I undef macros; the userspace code does not include that and I
 * add an EXPORT for the glibc one.*/

#undef strlen
#undef strstr
#undef memcpy
#undef memset

extern size_t strlen(const char *);
extern void *memcpy(void *, const void *, size_t);
extern void *memmove(void *, const void *, size_t);
extern void *memset(void *, int, size_t);
extern int printf(const char *, ...);

EXPORT_SYMBOL(strlen);
EXPORT_SYMBOL(memcpy);
EXPORT_SYMBOL(memmove);
EXPORT_SYMBOL(memset);
EXPORT_SYMBOL(printf);

EXPORT_SYMBOL(strstr);

/* Here, instead, I can provide a fake prototype. Yes, someone cares: genksyms.
 * However, the modules will use the CRC defined *here*, no matter if it is
 * good; so the versions of these symbols will always match
 */
#define EXPORT_SYMBOL_PROTO(sym)       \
       int sym(void);                  \
       EXPORT_SYMBOL(sym);

EXPORT_SYMBOL_PROTO(__errno_location);

EXPORT_SYMBOL_PROTO(access);
EXPORT_SYMBOL_PROTO(open);
EXPORT_SYMBOL_PROTO(open64);
EXPORT_SYMBOL_PROTO(close);
EXPORT_SYMBOL_PROTO(read);
EXPORT_SYMBOL_PROTO(write);
EXPORT_SYMBOL_PROTO(dup2);
EXPORT_SYMBOL_PROTO(__xstat);
EXPORT_SYMBOL_PROTO(__lxstat);
EXPORT_SYMBOL_PROTO(__lxstat64);
EXPORT_SYMBOL_PROTO(lseek);
EXPORT_SYMBOL_PROTO(lseek64);
EXPORT_SYMBOL_PROTO(chown);
EXPORT_SYMBOL_PROTO(truncate);
EXPORT_SYMBOL_PROTO(utime);
EXPORT_SYMBOL_PROTO(chmod);
EXPORT_SYMBOL_PROTO(rename);
EXPORT_SYMBOL_PROTO(__xmknod);

EXPORT_SYMBOL_PROTO(symlink);
EXPORT_SYMBOL_PROTO(link);
EXPORT_SYMBOL_PROTO(unlink);
EXPORT_SYMBOL_PROTO(readlink);

EXPORT_SYMBOL_PROTO(mkdir);
EXPORT_SYMBOL_PROTO(rmdir);
EXPORT_SYMBOL_PROTO(opendir);
EXPORT_SYMBOL_PROTO(readdir);
EXPORT_SYMBOL_PROTO(closedir);
EXPORT_SYMBOL_PROTO(seekdir);
EXPORT_SYMBOL_PROTO(telldir);

EXPORT_SYMBOL_PROTO(ioctl);

EXPORT_SYMBOL_PROTO(pread64);
EXPORT_SYMBOL_PROTO(pwrite64);

EXPORT_SYMBOL_PROTO(statfs);
EXPORT_SYMBOL_PROTO(statfs64);

EXPORT_SYMBOL_PROTO(getuid);

/*
 * Overrides for Emacs so that we follow Linus's tabbing style.
 * Emacs will notice this stuff at the end of the file and automatically
 * adjust the settings for this buffer only.  This must remain at the end
 * of the file.
 * ---------------------------------------------------------------------------
 * Local variables:
 * c-file-style: "linux"
 * End:
 */