Hi!
> +int main(int argc, char *argv[])
> +{
> + int lc, fd;
> + char *msg;
> + char buf[BUFSIZ], size[BUFSIZ];
> + void *s;
> +
> + msg = parse_opts(argc, argv, NULL, NULL);
> + if (msg != (char *)NULL)
> + tst_brkm(TBROK, tst_exit, "OPTION PARSING ERROR - %s", msg);
Once again, useless cast here.
> + setup();
> +
> + for (lc = 0; TEST_LOOPING(lc); lc++) {
> + Tst_count = 0;
> + tst_resm(TINFO, "create a zram device with %d bytes in size.",
> + SIZE);
> + sprintf(buf, "%s/disksize", PATH_ZRAM);
> + fd = open(buf, O_WRONLY);
And the sprintf() here.
> + if (fd == -1)
> + tst_brkm(TBROK|TERRNO, cleanup, "open %s", buf);
> + sprintf(size, "%d", SIZE);
> + if (write(fd, size, strlen(size)) != strlen(size))
> + tst_brkm(TBROK|TERRNO, cleanup, "write %s to %s", size,
> + buf);
> + close(fd);
> +
> + tst_resm(TINFO, "map it into memory.");
> + fd = open(DEVICE, O_RDWR);
> + if (fd == -1)
> + tst_brkm(TBROK|TERRNO, cleanup, "open %s", DEVICE);
> + s = mmap(NULL, SIZE, PROT_READ|PROT_WRITE, MAP_PRIVATE, fd, 0);
> + if (s == MAP_FAILED)
> + tst_brkm(TBROK|TERRNO, cleanup, "mmap");
> +
> + tst_resm(TINFO, "write all the memory.");
> + memset(s, SIZE, 'a');
> + close(fd);
> +
> + dump_info();
> +
> + tst_resm(TINFO, "reset it.");
> + sprintf(buf, "%s/reset", PATH_ZRAM);
And here.
> + fd = open(buf, O_WRONLY);
> + if (fd == -1)
> + tst_brkm(TBROK|TERRNO, cleanup, "open %s", buf);
> + if (write(fd, "1", 1) != 1)
> + tst_brkm(TBROK|TERRNO, cleanup, "write 1 to %s", buf);
> + close(fd);
> +
> + dump_info();
> + }
> + cleanup();
> +}
> +
> +void setup(void)
> +{
> + if (access(PATH_ZRAM, R_OK|W_OK|X_OK) == -1 && errno == ENOENT) {
> + system("modprobe zram");
> + modprobe = 1;
> + if (access(PATH_ZRAM, R_OK|W_OK|X_OK) == -1 && errno == ENOENT)
> + tst_brkm(TCONF, tst_exit, "system has no zram device.");
> + else
> + tst_brkm(TBROK|TERRNO, tst_exit, "access");
> + }
> + tst_sig(FORK, DEF_HANDLER, cleanup);
> + TEST_PAUSE;
> +}
> +
> +void cleanup(void)
> +{
> + if (modprobe == 1)
> + system("rmmod zram");
> +
> + TEST_CLEANUP;
> + tst_exit();
> +}
> +
> +void print(char *string)
> +{
> + FILE *fp;
> + char buf[BUFSIZ], value[BUFSIZ];
> +
> + sprintf(buf, "%s/%s", PATH_ZRAM, string);
> + fp = fopen(buf, "r");
> + if (fp == NULL)
> + tst_brkm(TBROK|TERRNO, cleanup, "fopen %s", buf);
> +
> + if (fgets(value, BUFSIZ, fp) == NULL)
> + tst_brkm(TBROK|TERRNO, cleanup, "fgets %s", buf);
> + value[strlen(value) - 1] = '\0';
> + fclose(fp);
> +
> + tst_resm(TINFO, "%s is %s", buf, value);
> +}
> +
> +void dump_info(void)
> +{
> + print("initstate");
> + print("compr_data_size");
> + print("orig_data_size");
> + print("disksize");
> + print("mem_used_total");
> + print("num_reads");
> + print("num_writes");
> + print("zero_pages");
> +}
--
Cyril Hrubis
[email protected]
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