From 7c5d249ad3fb6ce3815c1ed5f04bece02a3e7030 Mon Sep 17 00:00:00 2001 From: Paulo Marques Date: Wed, 20 Jun 2007 18:09:00 +0100 Subject: kallsyms: remove usage of memmem and _GNU_SOURCE from scripts/kallsyms.c The only in-kernel user of "memmem" is scripts/kallsyms.c and it only uses it to find tokens that are 2 bytes in size. It is trivial to replace it with a simple function that finds 2-byte tokens. This should help users from systems that don't have the memmem GNU extension available. Signed-off-by: Paulo Marques Signed-off-by: Sam Ravnborg --- scripts/kallsyms.c | 17 +++++++++++++---- 1 file changed, 13 insertions(+), 4 deletions(-) (limited to 'scripts/kallsyms.c') diff --git a/scripts/kallsyms.c b/scripts/kallsyms.c index 8b809b264d18..caf4c86c3d0b 100644 --- a/scripts/kallsyms.c +++ b/scripts/kallsyms.c @@ -24,8 +24,6 @@ * */ -#define _GNU_SOURCE - #include #include #include @@ -378,6 +376,17 @@ static void build_initial_tok_table(void) table_cnt = pos; } +static void *find_token(unsigned char *str, int len, unsigned char *token) +{ + int i; + + for (i = 0; i < len - 1; i++) { + if (str[i] == token[0] && str[i+1] == token[1]) + return &str[i]; + } + return NULL; +} + /* replace a given token in all the valid symbols. Use the sampled symbols * to update the counts */ static void compress_symbols(unsigned char *str, int idx) @@ -391,7 +400,7 @@ static void compress_symbols(unsigned char *str, int idx) p1 = table[i].sym; /* find the token on the symbol */ - p2 = memmem(p1, len, str, 2); + p2 = find_token(p1, len, str); if (!p2) continue; /* decrease the counts for this symbol's tokens */ @@ -410,7 +419,7 @@ static void compress_symbols(unsigned char *str, int idx) if (size < 2) break; /* find the token on the symbol */ - p2 = memmem(p1, size, str, 2); + p2 = find_token(p1, size, str); } while (p2); -- cgit v1.2.2