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libwine: Ignore libraries that are of the wrong 32/64 class.

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This commit is contained in:
Alexandre Julliard 2009-08-11 17:29:07 +02:00
parent c9cea6f294
commit 99538272d5
1 changed files with 44 additions and 2 deletions
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46
libs/wine/loader.c
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@ -147,12 +147,54 @@ static void build_dll_path(void)
} }
} }
/* check if the library is the correct architecture */
/* only returns false for a valid library of the wrong arch */
static int check_library_arch( int fd )
{
#ifdef __APPLE__
struct /* Mach-O header */
{
unsigned int magic;
unsigned int cputype;
} header;
if (read( fd, &header, sizeof(header) ) != sizeof(header)) return 1;
if (header.magic != 0xfeedface) return 1;
if (sizeof(void *) == sizeof(int)) return !(header.cputype >> 24);
else return (header.cputype >> 24) == 1; /* CPU_ARCH_ABI64 */
#else
struct /* ELF header */
{
unsigned char magic[4];
unsigned char class;
unsigned char data;
unsigned char version;
} header;
if (read( fd, &header, sizeof(header) ) != sizeof(header)) return 1;
if (memcmp( header.magic, "\177ELF", 4 )) return 1;
if (header.version != 1 /* EV_CURRENT */) return 1;
#ifdef WORDS_BIGENDIAN
if (header.data != 2 /* ELFDATA2MSB */) return 1;
#else
if (header.data != 1 /* ELFDATA2LSB */) return 1;
#endif
if (sizeof(void *) == sizeof(int)) return header.class == 1; /* ELFCLASS32 */
else return header.class == 2; /* ELFCLASS64 */
#endif
}
/* check if a given file can be opened */ /* check if a given file can be opened */
static inline int file_exists( const char *name ) static inline int file_exists( const char *name )
{ {
int ret = 0;
int fd = open( name, O_RDONLY ); int fd = open( name, O_RDONLY );
if (fd != -1) close( fd ); if (fd != -1)
return (fd != -1); {
ret = check_library_arch( fd );
close( fd );
}
return ret;
} }
static inline char *prepend( char *buffer, const char *str, size_t len ) static inline char *prepend( char *buffer, const char *str, size_t len )