1 #include "lapi/syscalls.h" 2 3 /* 4 * glibc commit: 5 * 06ab719d30b0 ("Fix Linux fcntl OFD locks for non-LFS architectures (BZ#20251)") 6 * changed behavior of arg parameter for OFD commands. It is no 7 * longer passing arg directly to syscall, but expects it to be 8 * 'struct flock'. 9 * 10 * On 64-bit or _FILE_OFFSET_BITS == 64 we can use fcntl() and 11 * struct flock64 with any glibc version. struct flock and flock64 12 * should be identical. 13 * 14 * On 32-bit, older glibc would pass arg directly, recent one treats 15 * it as 'struct flock' and converts it to 'struct flock64'. 16 * So, to support both version, on 32-bit we use fcntl64 syscall 17 * directly with struct flock64. 18 */ 19 #if __WORDSIZE == 64 || _FILE_OFFSET_BITS == 64 20 static int my_fcntl(int fd, int cmd, void *lck) 21 { 22 return SAFE_FCNTL(fd, cmd, lck); 23 } 24 #else 25 static int my_fcntl(int fd, int cmd, void *lck) 26 { 27 int ret = tst_syscall(__NR_fcntl64, fd, cmd, lck); 28 if (ret == -1) 29 tst_brk(TBROK|TERRNO, "fcntl64"); 30 return ret; 31 } 32 #endif 33
