aboutsummaryrefslogtreecommitdiff
path: root/libpwdgrp
diff options
context:
space:
mode:
authorGravatar Denys Vlasenko <vda.linux@googlemail.com>2015-01-04 02:34:52 +0100
committerGravatar Denys Vlasenko <vda.linux@googlemail.com>2015-01-04 02:34:52 +0100
commitdb4d1051ca5e9b4cc1fd2d1872194874f09e3b35 (patch)
treec6dd02d222f64d8c18082ec239659ca633377988 /libpwdgrp
parent5acf1346b463a41373f5a8c1df424c5f1646a4f9 (diff)
downloadbusybox-db4d1051ca5e9b4cc1fd2d1872194874f09e3b35.tar.gz
busybox-db4d1051ca5e9b4cc1fd2d1872194874f09e3b35.tar.bz2
libpwdgrp: another code shrink
function old new delta massage_data_for_r_func - 110 +110 bb_internal_getpwent_r 173 100 -73 getXXnam_r 176 95 -81 ------------------------------------------------------------------------------ (add/remove: 1/0 grow/shrink: 0/2 up/down: 110/-154) Total: -44 bytes Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
Diffstat (limited to 'libpwdgrp')
-rw-r--r--libpwdgrp/pwd_grp.c69
1 files changed, 31 insertions, 38 deletions
diff --git a/libpwdgrp/pwd_grp.c b/libpwdgrp/pwd_grp.c
index 0fd458fdc..3b96cc4d6 100644
--- a/libpwdgrp/pwd_grp.c
+++ b/libpwdgrp/pwd_grp.c
@@ -316,27 +316,19 @@ static void *convert_to_struct(struct passdb *db,
return result;
}
-/****** getXXnam/id_r */
-
-static int FAST_FUNC getXXnam_r(const char *name, uintptr_t db_and_field_pos,
+static int massage_data_for_r_func(struct passdb *db,
char *buffer, size_t buflen,
- void *result)
+ void **result,
+ char *buf)
{
- void *struct_buf = *(void**)result;
- char *buf;
- struct passdb *db = &get_S()->db[db_and_field_pos >> 2];
-
- *(void**)result = NULL;
- buf = parse_file(db, name, 0 /*db_and_field_pos & 3*/);
- /* "db_and_field_pos & 3" is commented out since so far we don't implement
- * getXXXid_r() functions which would use that to pass 2 here */
+ void *result_buf = *result;
+ *result = NULL;
if (buf) {
- size_t size = S.tokenize_end - buf;
- if (size > buflen) {
+ if (S.string_size > buflen) {
errno = ERANGE;
} else {
- memcpy(buffer, buf, size);
- *(void**)result = convert_to_struct(db, buffer, struct_buf);
+ memcpy(buffer, buf, S.string_size);
+ *result = convert_to_struct(db, buffer, result_buf);
}
free(buf);
}
@@ -347,6 +339,22 @@ static int FAST_FUNC getXXnam_r(const char *name, uintptr_t db_and_field_pos,
return errno;
}
+/****** getXXnam/id_r */
+
+static int FAST_FUNC getXXnam_r(const char *name, uintptr_t db_and_field_pos,
+ char *buffer, size_t buflen,
+ void *result)
+{
+ char *buf;
+ struct passdb *db = &get_S()->db[db_and_field_pos >> 2];
+
+ buf = parse_file(db, name, 0 /*db_and_field_pos & 3*/);
+ /* "db_and_field_pos & 3" is commented out since so far we don't implement
+ * getXXXid_r() functions which would use that to pass 2 here */
+
+ return massage_data_for_r_func(db, buffer, buflen, result, buf);
+}
+
int FAST_FUNC getpwnam_r(const char *name, struct passwd *struct_buf,
char *buffer, size_t buflen,
struct passwd **result)
@@ -369,15 +377,12 @@ int FAST_FUNC getspnam_r(const char *name, struct spwd *struct_buf, char *buffer
/****** getXXent_r */
-static int FAST_FUNC getXXent_r(void *struct_buf, char *buffer, size_t buflen,
- void *result,
- unsigned db_idx)
+static int FAST_FUNC getXXent_r(uintptr_t db_idx, char *buffer, size_t buflen,
+ void *result)
{
char *buf;
struct passdb *db = &get_S()->db[db_idx];
- *(void**)result = NULL;
-
if (!db->fp) {
db->fp = fopen_for_read(db->filename);
if (!db->fp) {
@@ -387,26 +392,14 @@ static int FAST_FUNC getXXent_r(void *struct_buf, char *buffer, size_t buflen,
}
buf = parse_common(db->fp, db, /*no search key:*/ NULL, 0);
- if (buf) {
- size_t size = S.tokenize_end - buf;
- if (size > buflen) {
- errno = ERANGE;
- } else {
- memcpy(buffer, buf, size);
- *(void**)result = convert_to_struct(db, buffer, struct_buf);
- }
- free(buf);
- }
- /* "The reentrant functions return zero on success.
- * In case of error, an error number is returned."
- * NB: not finding the record is also a "success" here:
- */
- return errno;
+ return massage_data_for_r_func(db, buffer, buflen, result, buf);
}
-int FAST_FUNC getpwent_r(struct passwd *struct_buf, char *buffer, size_t buflen, struct passwd **result)
+int FAST_FUNC getpwent_r(struct passwd *struct_buf, char *buffer, size_t buflen,
+ struct passwd **result)
{
- return getXXent_r(struct_buf, buffer, buflen, result, 0);
+ *result = struct_buf;
+ return getXXent_r(0, buffer, buflen, result);
}
/****** getXXnam/id */