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authorMasahiro Yamada <yamada.masahiro@socionext.com>2018-01-11 22:05:43 +0900
committerMasahiro Yamada <yamada.masahiro@socionext.com>2018-01-18 09:37:38 +0900
commitccfe78873c22561d3c514790094dc408e4876077 (patch)
treeeb3d49fb9fd8107c9e82d34a7c9f3e82a084b526 /scripts/basic
parent4003fd80cba967e4044ebac96f13746153e87c4d (diff)
downloadlwn-ccfe78873c22561d3c514790094dc408e4876077.tar.gz
lwn-ccfe78873c22561d3c514790094dc408e4876077.zip
fixdep: remove unneeded memcpy() in parse_dep_file()
Each token in the depfile is copied to the temporary buffer 's' to terminate the token with zero. We do not need to do this any more because the parsed buffer is now writable. Insert '\0' directly in the buffer without calling memcpy(). <limits.h> is no longer necessary. (It was needed for PATH_MAX). Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
Diffstat (limited to 'scripts/basic')
-rw-r--r--scripts/basic/fixdep.c22
1 files changed, 9 insertions, 13 deletions
diff --git a/scripts/basic/fixdep.c b/scripts/basic/fixdep.c
index 9f9238eaec19..dfba77b5d0c3 100644
--- a/scripts/basic/fixdep.c
+++ b/scripts/basic/fixdep.c
@@ -109,7 +109,6 @@
#include <string.h>
#include <stdlib.h>
#include <stdio.h>
-#include <limits.h>
#include <ctype.h>
int insert_extra_deps;
@@ -304,7 +303,6 @@ static void *read_file(const char *filename)
static void parse_dep_file(char *m)
{
char *p;
- char s[PATH_MAX];
int is_last, is_target;
int saw_any_target = 0;
int is_first_dep = 0;
@@ -330,16 +328,14 @@ static void parse_dep_file(char *m)
/* The /next/ file is the first dependency */
is_first_dep = 1;
} else {
- /* Save this token/filename */
- memcpy(s, m, p-m);
- s[p - m] = 0;
+ *p = '\0';
/* Ignore certain dependencies */
- if (strrcmp(s, "include/generated/autoconf.h") &&
- strrcmp(s, "include/generated/autoksyms.h") &&
- strrcmp(s, "arch/um/include/uml-config.h") &&
- strrcmp(s, "include/linux/kconfig.h") &&
- strrcmp(s, ".ver")) {
+ if (strrcmp(m, "include/generated/autoconf.h") &&
+ strrcmp(m, "include/generated/autoksyms.h") &&
+ strrcmp(m, "arch/um/include/uml-config.h") &&
+ strrcmp(m, "include/linux/kconfig.h") &&
+ strrcmp(m, ".ver")) {
/*
* Do not list the source file as dependency,
* so that kbuild is not confused if a .c file
@@ -360,15 +356,15 @@ static void parse_dep_file(char *m)
if (!saw_any_target) {
saw_any_target = 1;
printf("source_%s := %s\n\n",
- target, s);
+ target, m);
printf("deps_%s := \\\n",
target);
}
is_first_dep = 0;
} else
- printf(" %s \\\n", s);
+ printf(" %s \\\n", m);
- buf = read_file(s);
+ buf = read_file(m);
parse_config_file(buf);
free(buf);
}