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authorWaldemar Brodkorb <wbx@uclibc-ng.org>2016-01-03 18:20:40 (GMT)
committerWaldemar Brodkorb <wbx@uclibc-ng.org>2016-01-03 18:22:22 (GMT)
commita6975db114cce6484aa83f107d4496cd6045fd26 (patch)
tree15f21c6e8d8ce616c0fc6020161737df4cfe1ff6 /libc/misc
parent391e3c8487386ed74b981cab45705cde963c6da3 (diff)
libc: getpass,getutent: allocate buffer dynamically
Saves 0.6k bss with default buffer size(256). text data bss dec hex filename - 1172 8 408 1588 634 libc/misc/utmp/utent.os - 429 0 256 685 2ad libc/unistd/getpass.os + 1208 8 28 1244 4dc libc/misc/utmp/utent.os + 471 0 4 475 1db libc/unistd/getpass.os ================================================================ +78 -632 Signed-off-by: Leonid Lisovskiy <lly.dev@gmail.com>
Diffstat (limited to 'libc/misc')
-rw-r--r--libc/misc/utmp/utent.c12
1 files changed, 8 insertions, 4 deletions
diff --git a/libc/misc/utmp/utent.c b/libc/misc/utmp/utent.c
index 3671bb0..16f4b11 100644
--- a/libc/misc/utmp/utent.c
+++ b/libc/misc/utmp/utent.c
@@ -18,6 +18,7 @@
#include <fcntl.h>
#include <paths.h>
#include <errno.h>
+#include <malloc.h>
#include <string.h>
#include "internal/utmp.h"
#include <not-cancel.h>
@@ -27,7 +28,7 @@ __UCLIBC_MUTEX_STATIC(utmplock, PTHREAD_MUTEX_INITIALIZER);
/* Some global crap */
static int static_fd = -1;
-static struct UT static_utmp;
+static struct UT *static_utmp = NULL;
static const char default_file[] = __DEFAULT_PATH_UTMP;
static const char *current_file = default_file;
@@ -72,9 +73,12 @@ static struct UT *__get_unlocked(void)
return NULL;
}
- if (read_not_cancel(static_fd, &static_utmp,
- sizeof(static_utmp)) == sizeof(static_utmp)) {
- return &static_utmp;
+ if (static_utmp == NULL)
+ static_utmp = (struct UT *)__uc_malloc(sizeof(struct UT));
+
+ if (read_not_cancel(static_fd, static_utmp,
+ sizeof(struct UT)) == sizeof(struct UT)) {
+ return static_utmp;
}
return NULL;