mirror of
https://github.com/linux-apfs/apfstests.git
synced 2026-05-01 15:01:44 -07:00
Ross Zwisler
47a3f8a830
t_mmap_dio.c actually requires 4 arguments, not 3 as the current
check enforces:
usage: t_mmap_dio <src file> <dest file> <size> <msg>
open src(No such file or directory) len 0 (null)
Signed-off-by: Ross Zwisler <ross.zwisler@linux.intel.com>
Fixes: 456581661b ("xfs: test per-inode DAX flag by IO")
Reviewed-by: Eryu Guan <eguan@redhat.com>
Signed-off-by: Eryu Guan <eguan@redhat.com>
112 lines
2.2 KiB
C
112 lines
2.2 KiB
C
/*
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* This programme was originally written by
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* Jeff Moyer <jmoyer@redhat.com>
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*
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* Copyright (C) 2016, Red Hat, Inc.
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*/
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#define _GNU_SOURCE 1
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include <unistd.h>
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#include <fcntl.h>
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#include <sys/mman.h>
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#include <libaio.h>
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#include <errno.h>
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#include <sys/time.h>
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void usage(char *prog)
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{
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fprintf(stderr,
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"usage: %s <src file> <dest file> <size> <msg>\n",
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prog);
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exit(1);
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}
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void err_exit(char *op, unsigned long len, char *s)
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{
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fprintf(stderr, "%s(%s) len %lu %s\n",
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op, strerror(errno), len, s);
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exit(1);
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}
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int main(int argc, char **argv)
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{
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int fd, fd2, ret, dio = 1;
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char *map;
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char *msg;
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char *sfile;
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char *dfile;
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unsigned long len, opt;
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if (argc < 5)
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usage(basename(argv[0]));
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while ((opt = getopt(argc, argv, "b")) != -1)
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dio = 0;
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sfile = argv[optind];
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dfile = argv[optind + 1];
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msg = argv[optind + 3];
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len = strtoul(argv[optind + 2], NULL, 10);
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if (errno == ERANGE)
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err_exit("strtoul", 0, msg);
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/* Open source file and mmap*/
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fd = open(sfile, O_RDWR, 0644);
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if (fd < 0)
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err_exit("open src", len, msg);
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map = (char *)mmap(NULL, len,
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PROT_READ|PROT_WRITE, MAP_SHARED, fd, 0);
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if (map == MAP_FAILED)
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err_exit("mmap", len, msg);
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if (dio == 1) {
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/* Open dest file with O_DIRECT */
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fd2 = open(dfile, O_RDWR|O_DIRECT, 0644);
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if (fd2 < 0)
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err_exit("open dest", len, msg);
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} else {
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/* Open dest file without O_DIRECT */
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fd2 = open(dfile, O_RDWR, 0644);
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if (fd2 < 0)
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err_exit("open dest", len, msg);
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}
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/* First, test storing to dest file from source mapping */
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ret = write(fd2, map, len);
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if (ret != len)
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err_exit("write", len, msg);
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ret = fsync(fd2);
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if (ret != 0)
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err_exit("fsync", len, msg);
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ret = (int)lseek(fd2, 0, SEEK_SET);
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if (ret == -1)
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err_exit("lseek", len, msg);
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/* Next, test reading from dest file into source mapping */
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ret = read(fd2, map, len);
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if (ret != len)
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err_exit("read", len, msg);
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ret = msync(map, len, MS_SYNC);
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if (ret < 0)
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err_exit("msync", len, msg);
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ret = munmap(map, len);
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if (ret < 0)
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err_exit("munmap", len, msg);
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ret = close(fd);
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if (ret < 0)
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err_exit("clsoe fd", len, msg);
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ret = close(fd2);
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if (ret < 0)
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err_exit("close fd2", len, msg);
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exit(0);
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}
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