From: Aurelien Jacobs <redacted>
Date: Fri, 14 Oct 2016 21:50:08 +0000 (+0200)
Subject: use readdir() instead of the deprecated readir_r()
X-Git-Url: http://sigrok.org/gitweb/?p=libserialport.git;a=commitdiff_plain;h=df3b70a88849a50aad823a7c0a96ae83eb474a32

use readdir() instead of the deprecated readir_r()

readir() is threadsafe on both linux and freebsd anyway.
The rationale behind the readdir_r() deprecation is in the glibc manual:
https://www.gnu.org/software/libc/manual/html_node/Reading_002fClosing-Directory.html

This fixes the following warning with recent glibc:

linux.c: In function ‘list_ports’:
linux.c:197:2: warning: ‘readdir_r’ is deprecated [-Wdeprecated-declarations]
  while (!readdir_r(dir, &entry, &result) && result) {
  ^~~~~
---

diff --git a/freebsd.c b/freebsd.c
index 387b2f8..b51b731 100644
--- a/freebsd.c
+++ b/freebsd.c
@@ -325,8 +325,7 @@ SP_PRIV enum sp_return get_port_details(struct sp_port *port)
 SP_PRIV enum sp_return list_ports(struct sp_port ***list)
 {
 	DIR *dir;
-	struct dirent entry;
-	struct dirent *result;
+	struct dirent *entry;
 	struct termios tios;
 	char name[PATH_MAX];
 	int fd, ret;
@@ -336,20 +335,20 @@ SP_PRIV enum sp_return list_ports(struct sp_port ***list)
 		RETURN_FAIL("Could not open dir /dev");
 
 	DEBUG("Iterating over results");
-	while (!readdir_r(dir, &entry, &result) && result) {
+	while ((entry = readdir(dir))) {
 		ret = SP_OK;
-		if (entry.d_type != DT_CHR)
+		if (entry->d_type != DT_CHR)
 			continue;
-		if (strncmp(entry.d_name, "cuaU", 4) != 0)
-			if (strncmp(entry.d_name, "cuau", 4) != 0)
-				if (strncmp(entry.d_name, "cuad", 4) != 0)
+		if (strncmp(entry->d_name, "cuaU", 4) != 0)
+			if (strncmp(entry->d_name, "cuau", 4) != 0)
+				if (strncmp(entry->d_name, "cuad", 4) != 0)
 					continue;
-		if (strend(entry.d_name, ".init"))
+		if (strend(entry->d_name, ".init"))
 			continue;
-		if (strend(entry.d_name, ".lock"))
+		if (strend(entry->d_name, ".lock"))
 			continue;
 
-		snprintf(name, sizeof(name), "/dev/%s", entry.d_name);
+		snprintf(name, sizeof(name), "/dev/%s", entry->d_name);
 		DEBUG_FMT("Found device %s", name);
 
 		/* Check that we can open tty/cua device in rw mode - we need that. */
@@ -370,7 +369,7 @@ SP_PRIV enum sp_return list_ports(struct sp_port ***list)
 			continue;
 
 		DEBUG_FMT("Found port %s", name);
-		DBG("%s: %s\n", __func__, entry.d_name);
+		DBG("%s: %s\n", __func__, entry->d_name);
 
 		*list = list_append(*list, name);
 		if (!*list) {
diff --git a/linux.c b/linux.c
index f7dc8fd..7913394 100644
--- a/linux.c
+++ b/linux.c
@@ -178,12 +178,12 @@ SP_PRIV enum sp_return get_port_details(struct sp_port *port)
 SP_PRIV enum sp_return list_ports(struct sp_port ***list)
 {
 	char name[PATH_MAX], target[PATH_MAX];
-	struct dirent entry, *result;
+	struct dirent *entry;
 #ifdef HAVE_STRUCT_SERIAL_STRUCT
 	struct serial_struct serial_info;
 	int ioctl_result;
 #endif
-	char buf[sizeof(entry.d_name) + 23];
+	char buf[sizeof(entry->d_name) + 23];
 	int len, fd;
 	DIR *dir;
 	int ret = SP_OK;
@@ -194,19 +194,19 @@ SP_PRIV enum sp_return list_ports(struct sp_port ***list)
 		RETURN_FAIL("Could not open /sys/class/tty");
 
 	DEBUG("Iterating over results");
-	while (!readdir_r(dir, &entry, &result) && result) {
-		snprintf(buf, sizeof(buf), "/sys/class/tty/%s", entry.d_name);
+	while ((entry = readdir(dir))) {
+		snprintf(buf, sizeof(buf), "/sys/class/tty/%s", entry->d_name);
 		if (lstat(buf, &statbuf) == -1)
 			continue;
 		if (!S_ISLNK(statbuf.st_mode))
-			snprintf(buf, sizeof(buf), "/sys/class/tty/%s/device", entry.d_name);
+			snprintf(buf, sizeof(buf), "/sys/class/tty/%s/device", entry->d_name);
 		len = readlink(buf, target, sizeof(target));
 		if (len <= 0 || len >= (int)(sizeof(target) - 1))
 			continue;
 		target[len] = 0;
 		if (strstr(target, "virtual"))
 			continue;
-		snprintf(name, sizeof(name), "/dev/%s", entry.d_name);
+		snprintf(name, sizeof(name), "/dev/%s", entry->d_name);
 		DEBUG_FMT("Found device %s", name);
 		if (strstr(target, "serial8250")) {
 			/*