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58 lines
1.0 KiB
58 lines
1.0 KiB
/*
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* Copyright 2000 by Hans Reiser, licensing governed by reiserfs/README
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*/
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/*
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* MONGO READ - simple possible program to read a number of given files
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* suitable for benchmarking FS read performance
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*/
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#include <stdio.h>
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#include <errno.h>
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#include <sys/types.h>
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#include <sys/stat.h>
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#include <fcntl.h>
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#include <stdlib.h>
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#include <unistd.h>
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int main(int argc, char **argv)
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{
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int fd, rd, i;
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char *buf;
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int bufsize = 4096;
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if (argc < 2) {
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printf("\nUsage: %s filename [,filename2 [,...] ] ]\n\n",
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argv[0]);
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return 0;
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}
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buf = malloc(bufsize);
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if (buf == 0) {
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printf("Malloc failed on %d\n", bufsize);
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return 0;
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}
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/* Read all given files */
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for (i = 1; i < argc; i++) {
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/* open the file */
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fd = open(argv[i], O_RDONLY);
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if (fd == -1) {
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printf("Open failed (%s)\n", strerror(errno));
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return 0;
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}
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/* read the file */
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while ((rd = read(fd, buf, bufsize)) == bufsize) ;
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if (rd == -1) {
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printf("Read failed (%s)\n", strerror(errno));
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return 0;
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}
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close(fd);
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}
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free(buf);
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return 0;
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}
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