Hi!
> --- a/runtest/kernel_misc
> +++ b/runtest/kernel_misc
> @@ -11,3 +11,4 @@ rcu_torture rcu_torture.sh
> lock_torture lock_torture.sh
> zram01 zram01.sh
> zram02 zram02.sh
> +zram03 zram03
> diff --git a/testcases/kernel/device-drivers/zram/.gitignore
> b/testcases/kernel/device-drivers/zram/.gitignore
> new file mode 100644
> index 0000000..7d54f60
> --- /dev/null
> +++ b/testcases/kernel/device-drivers/zram/.gitignore
> @@ -0,0 +1 @@
> +/zram03
> diff --git a/testcases/kernel/device-drivers/zram/Makefile
> b/testcases/kernel/device-drivers/zram/Makefile
> index 0d73f66..5077cf4 100644
> --- a/testcases/kernel/device-drivers/zram/Makefile
> +++ b/testcases/kernel/device-drivers/zram/Makefile
> @@ -17,6 +17,6 @@
> top_srcdir ?= ../../../..
> include $(top_srcdir)/include/mk/testcases.mk
>
> -INSTALL_TARGETS := *.sh
> +INSTALL_TARGETS := *.sh zram03
Hmm, shouldn't these two changes be rather part of the previous patch?
> include $(top_srcdir)/include/mk/generic_leaf_target.mk
> diff --git a/testcases/kernel/device-drivers/zram/zram03.c
> b/testcases/kernel/device-drivers/zram/zram03.c
> index a5abb38..8448234 100644
> --- a/testcases/kernel/device-drivers/zram/zram03.c
> +++ b/testcases/kernel/device-drivers/zram/zram03.c
> @@ -23,6 +23,7 @@
> * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
> * 02110-1301, USA.
> */
> +
> #include <sys/types.h>
> #include <sys/stat.h>
> #include <sys/mman.h>
> @@ -31,7 +32,9 @@
> #include <stdio.h>
> #include <string.h>
> #include <unistd.h>
> +
> #include "test.h"
> +#include "safe_macros.h"
>
> char *TCID = "zram01";
> int TST_TOTAL = 1;
> @@ -81,15 +84,10 @@ static void set_disksize(void)
> char size[BUFSIZ];
>
> tst_resm(TINFO, "create a zram device with %ld bytes in size.", SIZE);
> - fd = open(PATH_ZRAM "/disksize", O_WRONLY);
> - if (fd == -1)
> - tst_brkm(TBROK | TERRNO, cleanup, "open %s",
> - PATH_ZRAM "/disksize");
> + fd = SAFE_OPEN(cleanup, PATH_ZRAM "/disksize", O_WRONLY);
> sprintf(size, "%ld", SIZE);
> - if (write(fd, size, strlen(size)) != strlen(size))
> - tst_brkm(TBROK | TERRNO, cleanup, "write %s to %s", size,
> - PATH_ZRAM "/disksize");
> - close(fd);
> + SAFE_WRITE(cleanup, 1, fd, size, strlen(size));
> + SAFE_CLOSE(cleanup, fd);
What about:
SAFE_FILE_PRINTF(cleanup, PATH_ZRAM "/disksize", "%ld", SIZE);
> }
>
> static void write_device(void)
> @@ -97,56 +95,48 @@ static void write_device(void)
> int fd;
> char *s;
>
> - 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_SHARED, fd, 0);
> - if (s == MAP_FAILED)
> - tst_brkm(TBROK | TERRNO, cleanup, "mmap");
> + tst_resm(TINFO, "map this zram device into memory.");
> + fd = SAFE_OPEN(cleanup, DEVICE, O_RDWR);
> + s = SAFE_MMAP(cleanup, NULL, SIZE, PROT_READ | PROT_WRITE,
> + MAP_SHARED, fd, 0);
>
> tst_resm(TINFO, "write all the memory.");
> memset(s, 'a', SIZE - 1);
> s[SIZE - 1] = '\0';
>
> - if (munmap(s, SIZE) == -1)
> - tst_brkm(TBROK | TERRNO, cleanup, "munmap");
> -
> - close(fd);
> + SAFE_MUNMAP(cleanup, s, SIZE);
> + SAFE_CLOSE(cleanup, fd);
> }
>
> static void verify_device(void)
> {
> int fd;
> - long i, fail;
> + long i = 0, fail = 0;
> char *s;
>
> tst_resm(TINFO, "verify contents from device.");
> - fd = open(DEVICE, O_RDONLY);
> - if (fd == -1)
> - tst_brkm(TBROK | TERRNO, cleanup, "open %s", DEVICE);
> - s = mmap(NULL, SIZE, PROT_READ, MAP_PRIVATE, fd, 0);
> - if (s == MAP_FAILED)
> - tst_brkm(TBROK | TERRNO, cleanup, "2nd mmap");
> -
> - i = 0;
> - fail = 0;
> + fd = SAFE_OPEN(cleanup, DEVICE, O_RDONLY);
> + s = SAFE_MMAP(cleanup, NULL, SIZE, PROT_READ, MAP_PRIVATE, fd, 0);
> +
> while (s[i] && i < SIZE - 1) {
> if (s[i] != 'a')
> fail++;
> i++;
> }
> - if (i != SIZE - 1)
> + if (i != SIZE - 1) {
> tst_resm(TFAIL, "expect size: %ld, actual size: %ld.",
> SIZE - 1, i);
> - else if (s[i] != '\0')
> + } else if (s[i] != '\0') {
> tst_resm(TFAIL, "zram device seems not null terminated");
> - if (fail)
> + } else if (fail) {
> tst_resm(TFAIL, "%ld failed bytes found.", fail);
> - if (munmap(s, SIZE) == -1)
> - tst_brkm(TBROK | TERRNO, cleanup, "2nd munmap");
> + } else {
> + tst_resm(TPASS, "data read from zram device is consistent "
> + "with those are written");
> + }
>
> - close(fd);
> + SAFE_MUNMAP(cleanup, s, SIZE);
> + SAFE_CLOSE(cleanup, fd);
> }
>
> static void reset(void)
> @@ -154,14 +144,9 @@ static void reset(void)
> int fd;
>
> tst_resm(TINFO, "reset it.");
> - fd = open(PATH_ZRAM "/reset", O_WRONLY);
> - if (fd == -1)
> - tst_brkm(TBROK | TERRNO, cleanup, "open %s",
> - PATH_ZRAM "/reset");
> - if (write(fd, "1", 1) != 1)
> - tst_brkm(TBROK | TERRNO, cleanup, "write 1 to %s",
> - PATH_ZRAM "/reset");
> - close(fd);
> + fd = SAFE_OPEN(cleanup, PATH_ZRAM "/reset", O_WRONLY);
> + SAFE_WRITE(cleanup, 1, fd, "1", 1);
> + SAFE_CLOSE(cleanup, fd);
SAFE_FILE_PRINTF() here as well.
> static void setup(void)
> @@ -171,12 +156,16 @@ static void setup(void)
> tst_require_root(NULL);
>
> retry:
> - if (access(PATH_ZRAM, R_OK | W_OK | X_OK) == -1) {
> + if (access(PATH_ZRAM, F_OK) == -1) {
> if (errno == ENOENT) {
> - if (retried)
> + if (retried) {
> tst_brkm(TCONF, NULL,
> "system has no zram device.");
> - system("modprobe zram");
> + }
> + if (system("modprobe zram") == -1) {
> + tst_brkm(TBROK | TERRNO, cleanup,
> + "system(modprobe zram) failed");
> + }
> modprobe = 1;
> retried = 1;
> goto retry;
> @@ -190,26 +179,17 @@ retry:
>
> static void cleanup(void)
> {
> - if (modprobe == 1)
> - system("rmmod zram");
> + if (modprobe == 1 && system("rmmod zram") == -1)
> + tst_resm(TWARN | TERRNO, "system(rmmod zram) failed");
> }
>
> static 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);
> + char filename[BUFSIZ], value[BUFSIZ];
>
> - tst_resm(TINFO, "%s is %s", buf, value);
> + sprintf(filename, "%s/%s", PATH_ZRAM, string);
> + SAFE_FILE_SCANF(cleanup, filename, "%s", value);
> + tst_resm(TINFO, "%s is %s", filename, value);
> }
--
Cyril Hrubis
[email protected]
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