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[libc] Change fcntl cmd when only fcntl64 is available #99675

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Merged
merged 1 commit into from
Jul 22, 2024
Merged

[libc] Change fcntl cmd when only fcntl64 is available #99675

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32 changes: 23 additions & 9 deletions libc/src/__support/OSUtil/linux/fcntl.cpp
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Original file line number Diff line number Diff line change
Expand Up @@ -86,17 +86,31 @@ int fcntl(int fd, int cmd, void *arg) {
libc_errno = -ret;
return -1;
}
// The general case
default: {
int retVal = LIBC_NAMESPACE::syscall_impl<int>(
FCNTL_SYSCALL_ID, fd, cmd, reinterpret_cast<void *>(arg));
if (retVal >= 0) {
return retVal;
}
libc_errno = -retVal;
return -1;
#ifdef SYS_fcntl64
case F_GETLK: {
if constexpr (FCNTL_SYSCALL_ID == SYS_fcntl64)
return fcntl(fd, F_GETLK64, arg);
break;
}
case F_SETLK: {
if constexpr (FCNTL_SYSCALL_ID == SYS_fcntl64)
return fcntl(fd, F_SETLK64, arg);
break;
}
case F_SETLKW: {
if constexpr (FCNTL_SYSCALL_ID == SYS_fcntl64)
return fcntl(fd, F_SETLKW64, arg);
break;
}
#endif
}
int retVal = LIBC_NAMESPACE::syscall_impl<int>(FCNTL_SYSCALL_ID, fd, cmd,
reinterpret_cast<void *>(arg));
if (retVal >= 0) {
return retVal;
}
libc_errno = -retVal;
return -1;
}

} // namespace internal
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