mirror of https://gitee.com/openkylin/qemu.git
52 lines
2.0 KiB
C
52 lines
2.0 KiB
C
/*
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* FUSE: Filesystem in Userspace
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE
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*/
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/*
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* Creates files on the underlying file system in response to a FUSE_MKNOD
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* operation
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*/
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static int mknod_wrapper(int dirfd, const char *path, const char *link,
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int mode, dev_t rdev)
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{
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int res;
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if (S_ISREG(mode)) {
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res = openat(dirfd, path, O_CREAT | O_EXCL | O_WRONLY, mode);
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if (res >= 0) {
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res = close(res);
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}
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} else if (S_ISDIR(mode)) {
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res = mkdirat(dirfd, path, mode);
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} else if (S_ISLNK(mode) && link != NULL) {
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res = symlinkat(link, dirfd, path);
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} else if (S_ISFIFO(mode)) {
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res = mkfifoat(dirfd, path, mode);
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} else {
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res = mknodat(dirfd, path, mode, rdev);
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}
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return res;
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}
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