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On 09/13/2018 03:10 AM, Hongzhi, Song wrote:
1.part of source code: ltp/testcases/kernel/syscalls/fcntl/fcntl34.c --- struct flock64 lck = { .l_whence = SEEK_SET, .l_start = 0, ---> .l_len = 1, <--- }; lck.l_type = F_WRLCK SAFE_FCNTL(fd, F_OFD_SETLKW, &lck); --- 2.SAFE_FCNTL is defined as a macro: --- #define SAFE_FCNTL(fd, cmd, ...) \ ---> ({int tst_ret_ = fcntl(fd, cmd, ##__VA_ARGS__); \ <--- tst_ret_ == -1 ? \ tst_brk(TBROK | TERRNO, \ "fcntl(%i,%s,...) failed", fd, #cmd), 0 \ : tst_ret_;}) ---
The expectation in glibc 2.28 is that you use fcntl64 with struct flock64, just as you would use struct stat64 with fstat64. (Without -D_FILE_OFFSET_BITS=64, of course.)
Thanks, Florian
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