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authorMichael Forney <forney@google.com>2018-03-19 03:54:02 +0300
committerMasahiro Yamada <yamada.masahiro@socionext.com>2018-03-25 20:01:24 +0300
commita670b0b4aed129dc11b465c1c330bfe9202023e5 (patch)
treeb92c66454350b3be0f8197877022122c81bc8f20 /scripts/Makefile.lib
parent3fdc7d3fe4c04bab0305838cf662ae30051cc192 (diff)
downloadlinux-a670b0b4aed129dc11b465c1c330bfe9202023e5.tar.xz
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/Makefile.lib')
-rw-r--r--scripts/Makefile.lib2
1 files changed, 1 insertions, 1 deletions
diff --git a/scripts/Makefile.lib b/scripts/Makefile.lib
index 5fd60af76d98..ef592e993e92 100644
--- a/scripts/Makefile.lib
+++ b/scripts/Makefile.lib
@@ -329,7 +329,7 @@ dtc-tmp = $(subst $(comma),_,$(dot-target).dts.tmp)
size_append = printf $(shell \
dec_size=0; \
for F in $1; do \
- fsize=$$(stat -c "%s" $$F); \
+ fsize=$$($(CONFIG_SHELL) $(srctree)/scripts/file-size.sh $$F); \
dec_size=$$(expr $$dec_size + $$fsize); \
done; \
printf "%08x\n" $$dec_size | \