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/*
* Copyright (c) 2011-2013 Wind River Systems; see
* guts/COPYRIGHT for information.
*
* int open(const char *path, int flags, ... { int mode })
* int rc = -1;
*/
struct stat buf = { };
int existed = 1;
int save_errno;
/* mask out mode bits appropriately */
mode = mode & ~pseudo_umask;
#ifdef PSEUDO_FORCE_ASYNCH
flags &= ~O_SYNC;
#endif
/* if a creation has been requested, check whether file exists */
if (flags & O_CREAT) {
save_errno = errno;
rc = real_stat(path, &buf);
existed = (rc != -1);
if (!existed)
pseudo_debug(PDBGF_FILE, "open_creat: %s -> 0%o\n", path, mode);
errno = save_errno;
}
/* because we are not actually root, secretly mask in 0600 to the
* underlying mode. The ", 0" is because the only time mode matters
* is if a file is going to be created, in which case it's
* not a directory.
*/
rc = real_open(path, flags, PSEUDO_FS_MODE(mode, 0));
save_errno = errno;
if (rc != -1) {
int stat_rc;
stat_rc = real_stat(path, &buf);
if (stat_rc != -1) {
buf.st_mode = PSEUDO_DB_MODE(buf.st_mode, mode);
if (!existed) {
real_fchmod(rc, PSEUDO_FS_MODE(mode, 0));
pseudo_client_op(OP_CREAT, 0, -1, -1, path, &buf);
}
pseudo_client_op(OP_OPEN, PSEUDO_ACCESS(flags), rc, -1, path, &buf);
} else {
pseudo_debug(PDBGF_CONSISTENCY, "open (fd %d, path %s, flags %d) succeeded, but stat failed (%s).\n",
rc, path, flags, strerror(errno));
pseudo_client_op(OP_OPEN, PSEUDO_ACCESS(flags), rc, -1, path, 0);
}
errno = save_errno;
}
/* return rc;
* }
*/
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