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74433c0fe1
Today, when compiling UML, I got warnings for two used unexported symbols: readdir64 and truncate64. Indeed, my glibc headers are aliasing readdir to readdir64 and truncate to truncate64 (and so on). I'm then adding additional exports. Since I've no idea if the symbols where always provided in the supported glibc's, I've added weak definitions too. Signed-off-by: Paolo 'Blaisorblade' Giarrusso <blaisorblade@yahoo.it> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
104 lines
2.8 KiB
C
104 lines
2.8 KiB
C
#include "linux/types.h"
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#include "linux/module.h"
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/* Some of this are builtin function (some are not but could in the future),
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* so I *must* declare good prototypes for them and then EXPORT them.
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* The kernel code uses the macro defined by include/linux/string.h,
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* so I undef macros; the userspace code does not include that and I
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* add an EXPORT for the glibc one.*/
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#undef strlen
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#undef strstr
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#undef memcpy
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#undef memset
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extern size_t strlen(const char *);
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extern void *memcpy(void *, const void *, size_t);
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extern void *memmove(void *, const void *, size_t);
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extern void *memset(void *, int, size_t);
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extern int printf(const char *, ...);
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EXPORT_SYMBOL(strlen);
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EXPORT_SYMBOL(memcpy);
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EXPORT_SYMBOL(memmove);
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EXPORT_SYMBOL(memset);
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EXPORT_SYMBOL(printf);
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EXPORT_SYMBOL(strstr);
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/* Here, instead, I can provide a fake prototype. Yes, someone cares: genksyms.
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* However, the modules will use the CRC defined *here*, no matter if it is
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* good; so the versions of these symbols will always match
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*/
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#define EXPORT_SYMBOL_PROTO(sym) \
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int sym(void); \
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EXPORT_SYMBOL(sym);
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extern void readdir64(void) __attribute__((weak));
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EXPORT_SYMBOL(readdir64);
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extern void truncate64(void) __attribute__((weak));
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EXPORT_SYMBOL(truncate64);
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#ifdef SUBARCH_i386
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EXPORT_SYMBOL(vsyscall_ehdr);
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EXPORT_SYMBOL(vsyscall_end);
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#endif
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EXPORT_SYMBOL_PROTO(__errno_location);
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EXPORT_SYMBOL_PROTO(access);
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EXPORT_SYMBOL_PROTO(open);
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EXPORT_SYMBOL_PROTO(open64);
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EXPORT_SYMBOL_PROTO(close);
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EXPORT_SYMBOL_PROTO(read);
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EXPORT_SYMBOL_PROTO(write);
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EXPORT_SYMBOL_PROTO(dup2);
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EXPORT_SYMBOL_PROTO(__xstat);
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EXPORT_SYMBOL_PROTO(__lxstat);
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EXPORT_SYMBOL_PROTO(__lxstat64);
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EXPORT_SYMBOL_PROTO(lseek);
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EXPORT_SYMBOL_PROTO(lseek64);
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EXPORT_SYMBOL_PROTO(chown);
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EXPORT_SYMBOL_PROTO(truncate);
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EXPORT_SYMBOL_PROTO(utime);
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EXPORT_SYMBOL_PROTO(chmod);
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EXPORT_SYMBOL_PROTO(rename);
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EXPORT_SYMBOL_PROTO(__xmknod);
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EXPORT_SYMBOL_PROTO(symlink);
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EXPORT_SYMBOL_PROTO(link);
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EXPORT_SYMBOL_PROTO(unlink);
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EXPORT_SYMBOL_PROTO(readlink);
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EXPORT_SYMBOL_PROTO(mkdir);
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EXPORT_SYMBOL_PROTO(rmdir);
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EXPORT_SYMBOL_PROTO(opendir);
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EXPORT_SYMBOL_PROTO(readdir);
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EXPORT_SYMBOL_PROTO(closedir);
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EXPORT_SYMBOL_PROTO(seekdir);
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EXPORT_SYMBOL_PROTO(telldir);
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EXPORT_SYMBOL_PROTO(ioctl);
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EXPORT_SYMBOL_PROTO(pread64);
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EXPORT_SYMBOL_PROTO(pwrite64);
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EXPORT_SYMBOL_PROTO(statfs);
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EXPORT_SYMBOL_PROTO(statfs64);
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EXPORT_SYMBOL_PROTO(getuid);
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EXPORT_SYMBOL_PROTO(fsync);
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EXPORT_SYMBOL_PROTO(fdatasync);
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/*
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* Overrides for Emacs so that we follow Linus's tabbing style.
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* Emacs will notice this stuff at the end of the file and automatically
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* adjust the settings for this buffer only. This must remain at the end
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* of the file.
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* ---------------------------------------------------------------------------
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* Local variables:
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* c-file-style: "linux"
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* End:
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*/
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