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Subject[PATCH] tools/bootconfig: Suppress non-error messages
Date
Suppress non-error messages when applying new bootconfig
to initrd image. To enable it, replace printf for error
message with pr_err() macro.
This also adds a testcase for this fix.

Reported-by: Michael Ellerman <mpe@ellerman.id.au>
Signed-off-by: Masami Hiramatsu <mhiramat@kernel.org>
---
tools/bootconfig/main.c | 28 ++++++++++++++--------------
tools/bootconfig/test-bootconfig.sh | 9 +++++++++
2 files changed, 23 insertions(+), 14 deletions(-)

diff --git a/tools/bootconfig/main.c b/tools/bootconfig/main.c
index 47f488458328..e18eeb070562 100644
--- a/tools/bootconfig/main.c
+++ b/tools/bootconfig/main.c
@@ -140,7 +140,7 @@ int load_xbc_from_initrd(int fd, char **buf)
return 0;

if (lseek(fd, -8, SEEK_END) < 0) {
- printf("Failed to lseek: %d\n", -errno);
+ pr_err("Failed to lseek: %d\n", -errno);
return -errno;
}

@@ -155,7 +155,7 @@ int load_xbc_from_initrd(int fd, char **buf)
return 0;

if (lseek(fd, stat.st_size - 8 - size, SEEK_SET) < 0) {
- printf("Failed to lseek: %d\n", -errno);
+ pr_err("Failed to lseek: %d\n", -errno);
return -errno;
}

@@ -166,7 +166,7 @@ int load_xbc_from_initrd(int fd, char **buf)
/* Wrong Checksum, maybe no boot config here */
rcsum = checksum((unsigned char *)*buf, size);
if (csum != rcsum) {
- printf("checksum error: %d != %d\n", csum, rcsum);
+ pr_err("checksum error: %d != %d\n", csum, rcsum);
return 0;
}

@@ -185,13 +185,13 @@ int show_xbc(const char *path)

fd = open(path, O_RDONLY);
if (fd < 0) {
- printf("Failed to open initrd %s: %d\n", path, fd);
+ pr_err("Failed to open initrd %s: %d\n", path, fd);
return -errno;
}

ret = load_xbc_from_initrd(fd, &buf);
if (ret < 0)
- printf("Failed to load a boot config from initrd: %d\n", ret);
+ pr_err("Failed to load a boot config from initrd: %d\n", ret);
else
xbc_show_compact_tree();

@@ -209,7 +209,7 @@ int delete_xbc(const char *path)

fd = open(path, O_RDWR);
if (fd < 0) {
- printf("Failed to open initrd %s: %d\n", path, fd);
+ pr_err("Failed to open initrd %s: %d\n", path, fd);
return -errno;
}

@@ -222,7 +222,7 @@ int delete_xbc(const char *path)
pr_output = 1;
if (size < 0) {
ret = size;
- printf("Failed to load a boot config from initrd: %d\n", ret);
+ pr_err("Failed to load a boot config from initrd: %d\n", ret);
} else if (size > 0) {
ret = fstat(fd, &stat);
if (!ret)
@@ -245,7 +245,7 @@ int apply_xbc(const char *path, const char *xbc_path)

ret = load_xbc_file(xbc_path, &buf);
if (ret < 0) {
- printf("Failed to load %s : %d\n", xbc_path, ret);
+ pr_err("Failed to load %s : %d\n", xbc_path, ret);
return ret;
}
size = strlen(buf) + 1;
@@ -262,7 +262,7 @@ int apply_xbc(const char *path, const char *xbc_path)
/* Check the data format */
ret = xbc_init(buf);
if (ret < 0) {
- printf("Failed to parse %s: %d\n", xbc_path, ret);
+ pr_err("Failed to parse %s: %d\n", xbc_path, ret);
free(data);
free(buf);
return ret;
@@ -279,20 +279,20 @@ int apply_xbc(const char *path, const char *xbc_path)
/* Remove old boot config if exists */
ret = delete_xbc(path);
if (ret < 0) {
- printf("Failed to delete previous boot config: %d\n", ret);
+ pr_err("Failed to delete previous boot config: %d\n", ret);
return ret;
}

/* Apply new one */
fd = open(path, O_RDWR | O_APPEND);
if (fd < 0) {
- printf("Failed to open %s: %d\n", path, fd);
+ pr_err("Failed to open %s: %d\n", path, fd);
return fd;
}
/* TODO: Ensure the @path is initramfs/initrd image */
ret = write(fd, data, size + 8);
if (ret < 0) {
- printf("Failed to apply a boot config: %d\n", ret);
+ pr_err("Failed to apply a boot config: %d\n", ret);
return ret;
}
close(fd);
@@ -334,12 +334,12 @@ int main(int argc, char **argv)
}

if (apply && delete) {
- printf("Error: You can not specify both -a and -d at once.\n");
+ pr_err("Error: You can not specify both -a and -d at once.\n");
return usage();
}

if (optind >= argc) {
- printf("Error: No initrd is specified.\n");
+ pr_err("Error: No initrd is specified.\n");
return usage();
}

diff --git a/tools/bootconfig/test-bootconfig.sh b/tools/bootconfig/test-bootconfig.sh
index 87725e8723f8..1de06de328e2 100755
--- a/tools/bootconfig/test-bootconfig.sh
+++ b/tools/bootconfig/test-bootconfig.sh
@@ -64,6 +64,15 @@ echo "File size check"
new_size=$(stat -c %s $INITRD)
xpass test $new_size -eq $initrd_size

+echo "No error messge while applying"
+OUTFILE=`mktemp tempout-XXXX`
+dd if=/dev/zero of=$INITRD bs=4096 count=1
+printf " \0\0\0 \0\0\0" >> $INITRD
+$BOOTCONF -a $TEMPCONF $INITRD > $OUTFILE 2>&1
+xfail grep -i "failed" $OUTFILE
+xfail grep -i "error" $OUTFILE
+rm $OUTFILE
+
echo "Max node number check"

echo -n > $TEMPCONF
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