Refactor do/while cycle and multiple while cycles

* It makes the code clearer to read/understand
* Cppcheck tool doesn't show this anymore: [./util.c:215]: (error) Resource leak: fd

[Dan: don't change the coding style]
Signed-off-by: Dan McGee <dan@archlinux.org>

3 files changed, 14 insertions, 6 deletions

diff --git a/lib/libalpm/trans.c b/lib/libalpm/trans.c
index aea71db1..4879d236 100644
--- a/lib/libalpm/trans.c
+++ b/lib/libalpm/trans.c
@@ -261,7 +261,10 @@ int SYMEXPORT alpm_trans_release()
 	/* unlock db */
 	if(!nolock_flag) {
 		if(handle->lckfd != -1) {
-			while(close(handle->lckfd) == -1 && errno == EINTR);
+			int fd;
+			do {
+				fd = close(handle->lckfd);
+			} while(fd == -1 && errno == EINTR);
 			handle->lckfd = -1;
 		}
 		if(_alpm_lckrm()) {
diff --git a/lib/libalpm/util.c b/lib/libalpm/util.c
index cf2d6236..27e861e4 100644
--- a/lib/libalpm/util.c
+++ b/lib/libalpm/util.c
@@ -212,8 +212,9 @@ int _alpm_lckmk()
 	_alpm_makepath(dir);
 	FREE(dir);
 
-	while((fd = open(file, O_WRONLY | O_CREAT | O_EXCL, 0000)) == -1
-			&& errno == EINTR);
+	do {
+		fd = open(file, O_WRONLY | O_CREAT | O_EXCL, 0000);
+	} while (fd == -1 && errno == EINTR);
 	if(fd > 0) {
 		FILE *f = fdopen(fd, "w");
 		fprintf(f, "%ld\n", (long)getpid());
@@ -315,7 +316,7 @@ int _alpm_unpack(const char *archive, const char *prefix, alpm_list_t *list, int
 
 		st = archive_entry_stat(entry);
 		entryname = archive_entry_pathname(entry);
-		
+
 		if(S_ISREG(st->st_mode)) {
 			archive_entry_set_perm(entry, 0644);
 		} else if(S_ISDIR(st->st_mode)) {
@@ -511,7 +512,9 @@ int _alpm_run_chroot(const char *root, const char *cmd)
 		/* this code runs for the parent only (wait on the child) */
 		pid_t retpid;
 		int status;
-		while((retpid = waitpid(pid, &status, 0)) == -1 && errno == EINTR);
+		do {
+			retpid = waitpid(pid, &status, 0);
+		} while(retpid == -1 && errno == EINTR);
 		if(retpid == -1) {
 			_alpm_log(PM_LOG_ERROR, _("call to waitpid failed (%s)\n"),
 			          strerror(errno));
diff --git a/src/pacman/pacman.c b/src/pacman/pacman.c
index f4f80449..574a4a8a 100644
--- a/src/pacman/pacman.c
+++ b/src/pacman/pacman.c
@@ -234,7 +234,9 @@ static void cleanup(int ret) {
 static ssize_t xwrite(int fd, const void *buf, size_t count)
 {
 	ssize_t ret;
-	while((ret = write(fd, buf, count)) == -1 && errno == EINTR);
+	do {
+		ret = write(fd, buf, count);
+	} while(ret == -1 && errno == EINTR);
 	return(ret);
 }