#include "tls_pbuf.h"
#include "sync.h"
#include "child_info.h"
+#include <cygwin/fs.h> /* needed for RENAME_NOREPLACE */
#undef _close
#undef _lseek
return false;
}
-extern "C" int
-rename (const char *oldpath, const char *newpath)
+/* If newpath names an existing file and the RENAME_NOREPLACE flag is
+ specified, fail with EEXIST. Exception: Don't fail if the purpose
+ of the rename is just to change the case of oldpath on a
+ case-insensitive file system. */
+static int
+rename2 (const char *oldpath, const char *newpath, unsigned int flags)
{
tmp_pathbuf tp;
int res = -1;
path_conv oldpc, newpc, new2pc, *dstpc, *removepc = NULL;
bool old_dir_requested = false, new_dir_requested = false;
bool old_explicit_suffix = false, new_explicit_suffix = false;
+ bool noreplace = flags & RENAME_NOREPLACE;
size_t olen, nlen;
bool equal_path;
NTSTATUS status = STATUS_SUCCESS;
__try
{
+ if (flags & ~RENAME_NOREPLACE)
+ /* RENAME_NOREPLACE is the only flag currently supported. */
+ {
+ set_errno (EINVAL);
+ __leave;
+ }
if (!*oldpath || !*newpath)
{
/* Reject rename("","x"), rename("x",""). */
__leave;
}
+ /* Should we replace an existing file? */
+ if ((removepc || dstpc->exists ()) && noreplace)
+ {
+ set_errno (EEXIST);
+ __leave;
+ }
+
/* Opening the file must be part of the transaction. It's not sufficient
to call only NtSetInformationFile under the transaction. Therefore we
have to start the transaction here, if necessary. */
__leave;
}
pfri = (PFILE_RENAME_INFORMATION) tp.w_get ();
- pfri->ReplaceIfExists = TRUE;
+ pfri->ReplaceIfExists = !noreplace;
pfri->RootDirectory = NULL;
pfri->FileNameLength = dstpc->get_nt_native_path ()->Length;
memcpy (&pfri->FileName, dstpc->get_nt_native_path ()->Buffer,
pfri->FileNameLength);
+ /* If dstpc points to an existing file and RENAME_NOREPLACE has
+ been specified, then we should get NT error
+ STATUS_OBJECT_NAME_COLLISION ==> Win32 error
+ ERROR_ALREADY_EXISTS ==> Cygwin error EEXIST. */
status = NtSetInformationFile (fh, &io, pfri,
sizeof *pfri + pfri->FileNameLength,
FileRenameInformation);
return res;
}
+extern "C" int
+rename (const char *oldpath, const char *newpath)
+{
+ return rename2 (oldpath, newpath, 0);
+}
+
extern "C" int
system (const char *cmdstring)
{
}
extern "C" int
-renameat (int olddirfd, const char *oldpathname,
- int newdirfd, const char *newpathname)
+renameat2 (int olddirfd, const char *oldpathname,
+ int newdirfd, const char *newpathname, unsigned int flags)
{
tmp_pathbuf tp;
__try
char *newpath = tp.c_get ();
if (gen_full_path_at (newpath, newdirfd, newpathname))
__leave;
- return rename (oldpath, newpath);
+ return rename2 (oldpath, newpath, flags);
}
__except (EFAULT) {}
__endtry
return -1;
}
+extern "C" int
+renameat (int olddirfd, const char *oldpathname,
+ int newdirfd, const char *newpathname)
+{
+ return renameat2 (olddirfd, oldpathname, newdirfd, newpathname, 0);
+}
+
extern "C" int
scandirat (int dirfd, const char *pathname, struct dirent ***namelist,
int (*select) (const struct dirent *),