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