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xio-creat.c
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xio-creat.c
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/* source: xio-creat.c */
/* Copyright Gerhard Rieger 2001-2009 */
/* Published under the GNU General Public License V.2, see file COPYING */
/* this file contains the source for opening addresses of create type */
#include "xiosysincludes.h"
#if WITH_CREAT
#include "xioopen.h"
#include "xio-named.h"
#include "xio-creat.h"
static int xioopen_creat(int arg, const char *argv[], struct opt *opts, int rw, xiofile_t *fd, unsigned groups, int dummy1, int dummy2, int dummy3);
/*! within stream model, this is a write-only address - use 2 instead of 3 */
static const struct xioaddr_endpoint_desc xioaddr_creat1 = { XIOADDR_SYS, "create", 1, XIOBIT_ALL/*?*/, GROUP_FD|GROUP_NAMED|GROUP_FILE, XIOSHUT_NONE, XIOCLOSE_CLOSE, xioopen_creat, 0, 0, 0 HELP(":<filename>") };
const union xioaddr_desc *xioaddrs_creat[] = {
(union xioaddr_desc *)&xioaddr_creat1,
NULL
};
/* retrieve the mode option and perform the creat() call.
returns the file descriptor or a negative value. */
static int _xioopen_creat(const char *path, int rw, struct opt *opts) {
mode_t mode = 0666;
int fd;
retropt_modet(opts, OPT_PERM, &mode);
if ((fd = Creat(path, mode)) < 0) {
Error3("creat(\"%s\", 0%03o): %s",
path, mode, strerror(errno));
return STAT_RETRYLATER;
}
return fd;
}
static int xioopen_creat(int argc, const char *argv[], struct opt *opts, int xioflags, xiofile_t *xfd, unsigned groups, int dummy1, int dummy2, int dummy3) {
const char *filename = argv[1];
int rw = (xioflags&XIO_ACCMODE);
int fd;
bool exists;
bool opt_unlink_close = false;
int result;
/* remove old file, or set user/permissions on old file; parse options */
if ((result = _xioopen_named_early(argc, argv, xfd, groups, &exists, opts)) < 0) {
return result;
}
retropt_bool(opts, OPT_UNLINK_CLOSE, &opt_unlink_close);
if (opt_unlink_close) {
if ((xfd->stream.unlink_close = strdup(filename)) == NULL) {
Error1("strdup(\"%s\"): out of memory", filename);
}
xfd->stream.opt_unlink_close = true;
}
Notice2("creating regular file \"%s\" for %s", filename, ddirection[rw]);
if ((fd = _xioopen_creat(filename, rw, opts)) < 0)
return fd;
if (XIOWITHRD(rw)) xfd->stream.rfd = fd;
if (XIOWITHWR(rw)) xfd->stream.wfd = fd;
applyopts_named(filename, opts, PH_PASTOPEN);
if ((result = applyopts2(fd, opts, PH_PASTOPEN, PH_LATE2)) < 0)
return result;
applyopts_cloexec(fd, opts);
applyopts_fchown(fd, opts);
if ((result = _xio_openlate(&xfd->stream, opts)) < 0)
return result;
return 0;
}
#endif /* WITH_CREAT */