JehanneOS/newlib
1
0
Fork 0
Code Issues Pull Requests Projects Releases Wiki Activity

posix_fallocate() *returns* error codes but does not set errno

Browse Source 
Also updates the fhandler_*::ftruncate implementations to adhere to the same
semantics.  The error handling semantics of those syscalls that use
fhandler_*::ftruncate are moved to the implementations of those syscalls (
in particular ftruncate() and friends still set errno and return -1 on error
but that logic is handled in the syscall implementation).
This commit is contained in:
Erik M. Bray
2017-11-02 16:45:35 +01:00
committed by Corinna Vinschen
parent 8c8cdd9ad7
commit 94854321bb
4 changed files with 16 additions and 18 deletions
Download Patch File Download Diff File Expand all files Collapse all files

17
winsup/cygwin/fhandler_disk_file.cc
View File

@@ -1112,14 +1112,14 @@ fhandler_disk_file::fadvise (off_t offset, off_t length, int advice)
int
fhandler_disk_file::ftruncate (off_t length, bool allow_truncate)
{
int res = -1;
int res = 0;
if (length < 0 || !get_handle ())
set_errno (EINVAL);
res = EINVAL;
else if (pc.isdir ())
set_errno (EISDIR);
res = EISDIR;
else if (!(get_access () & GENERIC_WRITE))
set_errno (EBADF);
res = EBADF;
else
{
NTSTATUS status;
@@ -1130,10 +1130,7 @@ fhandler_disk_file::ftruncate (off_t length, bool allow_truncate)
status = NtQueryInformationFile (get_handle (), &io, &fsi, sizeof fsi,
FileStandardInformation);
if (!NT_SUCCESS (status))
{
__seterrno_from_nt_status (status);
return -1;
}
return geterrno_from_nt_status (status);
/* If called through posix_fallocate, silently succeed if length
is less than the file's actual length. */
@@ -1159,9 +1156,7 @@ fhandler_disk_file::ftruncate (off_t length, bool allow_truncate)
&feofi, sizeof feofi,
FileEndOfFileInformation);
if (!NT_SUCCESS (status))
__seterrno_from_nt_status (status);
else
res = 0;
res = geterrno_from_nt_status (status);
}
return res;
}