libreboot-utils: optimised string functions

operate per word, not per byte

this is also done on sdup, which uses a slightly
inefficient method: the new string allocation is
that of the maximum size, rather than what we
need. for example, if you wanted a 20 character
string (21 including null), you would still allocate
4096 bytes if that was the maximum length.

it's a bit naughty, and i have half a mind to
keep sdup on the old implementation, but i'll leave
it be for now.

Signed-off-by: Leah Rowe <leah@libreboot.org>

1 files changed, 4 insertions, 0 deletions

diff --git a/util/libreboot-utils/include/common.h b/util/libreboot-utils/include/common.h
index da102f05..74620ca6 100644
--- a/util/libreboot-utils/include/common.h
+++ b/util/libreboot-utils/include/common.h
@@ -372,6 +372,8 @@ void write_mac_part(size_t partnum);
 /* string functions
  */
 
+size_t page_remain(const void *p);
+long pagesize(void);
 int xunveilx(const char *path, const char *permissions);
 int xpledgex(const char *promises, const char *execpromises);
 char *smalloc(char **buf, size_t size);
@@ -381,6 +383,8 @@ int slen(const char *scmp, size_t maxlen,
 int vcmp(const void *s1, const void *s2, size_t n);
 int scmp(const char *a, const char *b,
     size_t maxlen, int *rval);
+int ccmp(const char *a, const char *b, size_t i,
+    int *rval);
 int sdup(const char *s,
     size_t n, char **dest);
 int scatn(ssize_t sc, const char **sv,