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* flock.cc (fhandler_disk_file::lock): Don't test file open mode in

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case of flock-type locks.  Explain why.
This commit is contained in:
Corinna Vinschen
2009-03-12 18:30:29 +00:00
parent 2e0b52c9d8
commit fc69f1aed5
2 changed files with 12 additions and 2 deletions
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9
winsup/cygwin/flock.cc
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@@ -652,14 +652,19 @@ fhandler_disk_file::lock (int a_op, struct __flock64 *fl)
a_op = F_UNLCK;
break;
case F_RDLCK:
if (!(get_access () & GENERIC_READ))
/* flock semantics don't specify a requirement that the file has
been opened with a specific open mode, in contrast to POSIX locks
which require that a file is opened for reading to place a read
lock and opened for writing to place a write lock. */
if ((a_flags & F_POSIX) && !(get_access () & GENERIC_READ))
{
set_errno (EBADF);
return -1;
}
break;
case F_WRLCK:
if (!(get_access () & GENERIC_WRITE))
/* See above comment. */
if ((a_flags & F_POSIX) && !(get_access () & GENERIC_WRITE))
{
set_errno (EBADF);
return -1;