8307eb5f55
This helps weed out functions that should be static, functions that are not declared in public header files, and .c files that don't include their .h interface headers. Change-Id: Ie39f83ad4b320847e4a938bd1d4d0b4fa21c2ffa Signed-off-by: Daniel Verkamp <daniel.verkamp@intel.com>
109 lines
2.8 KiB
C
109 lines
2.8 KiB
C
/*-
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* BSD LICENSE
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*
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* Copyright(c) 2015 Intel Corporation. All rights reserved.
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* All rights reserved.
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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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*
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* * 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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* * Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in
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* the documentation and/or other materials provided with the
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* distribution.
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* * Neither the name of Intel Corporation nor the names of its
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* contributors may be used to endorse or promote products derived
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* from this software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
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* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
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* OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
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* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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#include "spdk/file.h"
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#include <sys/ioctl.h>
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#include <sys/types.h>
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#include <sys/stat.h>
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#include <unistd.h>
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#include <stdint.h>
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#ifdef __linux__
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#include <linux/fs.h>
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#endif
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static uint64_t
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dev_get_size(int fd)
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{
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#if defined(DIOCGMEDIASIZE) /* FreeBSD */
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off_t size;
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if (ioctl(fd, DIOCGMEDIASIZE, &size) == 0) {
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return size;
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}
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#elif defined(__linux__) && defined(BLKGETSIZE64)
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uint64_t size;
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if (ioctl(fd, BLKGETSIZE64, &size) == 0) {
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return size;
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}
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#endif
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return 0;
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}
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uint32_t
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dev_get_blocklen(int fd)
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{
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#if defined(DKIOCGETBLOCKSIZE) /* FreeBSD */
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uint32_t blocklen;
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if (ioctl(fd, DKIOCGETBLOCKSIZE, &blocklen) == 0) {
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return blocklen;
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}
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#elif defined(__linux__) && defined(BLKSSZGET)
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uint32_t blocklen;
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if (ioctl(fd, BLKSSZGET, &blocklen) == 0) {
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return blocklen;
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}
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#endif
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/* Assume 512 if none of the other methods worked */
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return 512;
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}
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uint64_t
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file_get_size(int fd)
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{
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struct stat st;
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if (fstat(fd, &st) != 0) {
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return 0;
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}
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if (S_ISLNK(st.st_mode)) {
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return 0;
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}
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if (S_ISBLK(st.st_mode) || S_ISCHR(st.st_mode)) {
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return dev_get_size(fd);
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} else if (S_ISREG(st.st_mode)) {
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return st.st_size;
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}
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/* Not REG, CHR or BLK */
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return 0;
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}
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