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authorMichael Forney <forney@google.com>2018-03-18 17:54:02 -0700
committerMasahiro Yamada <yamada.masahiro@socionext.com>2018-03-26 02:01:24 +0900
commita670b0b4aed129dc11b465c1c330bfe9202023e5 (patch)
treeb92c66454350b3be0f8197877022122c81bc8f20 /scripts/link-vmlinux.sh
parent3fdc7d3fe4c04bab0305838cf662ae30051cc192 (diff)
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kbuild: Use ls(1) instead of stat(1) to obtain file size
stat(1) is not standardized and different implementations have their own (conflicting) flags for querying the size of a file. ls(1) provides the same information (value of st.st_size) in the 5th column, except when the file is a character or block device. This output is standardized[0]. The -n option turns on -l, which writes lines formatted like "%s %u %s %s %u %s %s\n", <file mode>, <number of links>, <owner name>, <group name>, <size>, <date and time>, <pathname> but instead of writing the <owner name> and <group name>, it writes the numeric owner and group IDs (this avoids /etc/passwd and /etc/group lookups as well as potential field splitting issues). The <size> field is specified as "the value that would be returned for the file in the st_size field of struct stat". To avoid duplicating logic in several locations in the tree, create scripts/file-size.sh and update callers to use that instead of stat(1). [0] http://pubs.opengroup.org/onlinepubs/9699919799/utilities/ls.html#tag_20_73_10 Signed-off-by: Michael Forney <forney@google.com> Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
Diffstat (limited to 'scripts/link-vmlinux.sh')
-rwxr-xr-xscripts/link-vmlinux.sh4
1 files changed, 2 insertions, 2 deletions
diff --git a/scripts/link-vmlinux.sh b/scripts/link-vmlinux.sh
index 08ca08e9105c..9045823c7be7 100755
--- a/scripts/link-vmlinux.sh
+++ b/scripts/link-vmlinux.sh
@@ -269,8 +269,8 @@ if [ -n "${CONFIG_KALLSYMS}" ]; then
kallsyms .tmp_vmlinux2 .tmp_kallsyms2.o
# step 3
- size1=$(stat -c "%s" .tmp_kallsyms1.o)
- size2=$(stat -c "%s" .tmp_kallsyms2.o)
+ size1=$(${CONFIG_SHELL} "${srctree}/scripts/file-size.sh" .tmp_kallsyms1.o)
+ size2=$(${CONFIG_SHELL} "${srctree}/scripts/file-size.sh" .tmp_kallsyms2.o)
if [ $size1 -ne $size2 ] || [ -n "${KALLSYMS_EXTRA_PASS}" ]; then
kallsymso=.tmp_kallsyms3.o