Replace BSD MAXPATHLEN by POSIX PATH_MAX

Prefer using the POSIX constant PATH_MAX instead of the legacy BSD derived MAXPATHLEN. The necessary includes for MAXPATHLEN and PATH_MAX are <sys/param.h> and <limits.h>, respectively.

Signed-off-by Felix Janda <[email protected]>

---
This patch is identical except for title and commit message to the one with title "Use PATH_MAX instead of MAXPATHLEN".

---
 ip/ipnetns.c    | 15 +++++++--------
 lib/namespace.c | 11 ++++++-----
 2 files changed, 13 insertions(+), 13 deletions(-)

ip/ipnetns.c +7 -8

index 0c28f8a..3b704a4 100644
@@ -4,7 +4,6 @@
 #include <sys/wait.h>
 #include <sys/inotify.h>
 #include <sys/mount.h>
-#include <sys/param.h>
 #include <sys/syscall.h>
 #include <stdio.h>
 #include <string.h>

@@ -437,7 +436,7 @@ static int is_pid(const char *str)
 static int netns_pids(int argc, char **argv)
 {
        const char *name;
-       char net_path[MAXPATHLEN];
+       char net_path[PATH_MAX];
        int netns;
        struct stat netst;
        DIR *dir;

@@ -472,7 +471,7 @@ static int netns_pids(int argc, char **argv)
                return -1;
        }
        while((entry = readdir(dir))) {
-               char pid_net_path[MAXPATHLEN];
+               char pid_net_path[PATH_MAX];
                struct stat st;
                if (!is_pid(entry->d_name))
                        continue;

@@ -493,7 +492,7 @@ static int netns_pids(int argc, char **argv)
 static int netns_identify(int argc, char **argv)
 {
        const char *pidstr;
-       char net_path[MAXPATHLEN];
+       char net_path[PATH_MAX];
        int netns;
        struct stat netst;
        DIR *dir;

@@ -537,7 +536,7 @@ static int netns_identify(int argc, char **argv)
        }
 
        while((entry = readdir(dir))) {
-               char name_path[MAXPATHLEN];
+               char name_path[PATH_MAX];
                struct stat st;
 
                if (strcmp(entry->d_name, ".") == 0)

@@ -563,7 +562,7 @@ static int netns_identify(int argc, char **argv)
 
 static int on_netns_del(char *nsname, void *arg)
 {
-       char netns_path[MAXPATHLEN];
+       char netns_path[PATH_MAX];
 
        snprintf(netns_path, sizeof(netns_path), "%s/%s", NETNS_RUN_DIR, nsname);
        umount2(netns_path, MNT_DETACH);

@@ -612,7 +611,7 @@ static int netns_add(int argc, char **argv)
         * userspace tweaks like remounting /sys, or bind mounting
         * a new /etc/resolv.conf can be shared between uers.
         */
-       char netns_path[MAXPATHLEN];
+       char netns_path[PATH_MAX];
        const char *name;
        int fd;
        int made_netns_run_dir_mount = 0;

@@ -707,7 +706,7 @@ static int set_netnsid_from_name(const char *name, int nsid)
 
 static int netns_set(int argc, char **argv)
 {
-       char netns_path[MAXPATHLEN];
+       char netns_path[PATH_MAX];
        const char *name;
        int netns, nsid;
 

lib/namespace.c +6 -6

index c03a103..a61feb6 100644
@@ -9,15 +9,16 @@
 
 #include <fcntl.h>
 #include <dirent.h>
+#include <limits.h>
 
 #include "utils.h"
 #include "namespace.h"
 
 static void bind_etc(const char *name)
 {
-       char etc_netns_path[MAXPATHLEN];
-       char netns_name[MAXPATHLEN];
-       char etc_name[MAXPATHLEN];
+       char etc_netns_path[PATH_MAX];
+       char netns_name[PATH_MAX];
+       char etc_name[PATH_MAX];
        struct dirent *entry;
        DIR *dir;
 

@@ -43,7 +44,7 @@ static void bind_etc(const char *name)
 
 int netns_switch(char *name)
 {
-       char net_path[MAXPATHLEN];
+       char net_path[PATH_MAX];
        int netns;
 
        snprintf(net_path, sizeof(net_path), "%s/%s", NETNS_RUN_DIR, name);

@@ -87,7 +88,7 @@ int netns_switch(char *name)
 
 int netns_get_fd(const char *name)
 {
-       char pathbuf[MAXPATHLEN];
+       char pathbuf[PATH_MAX];
        const char *path, *ptr;
 
        path = name;
--

2.3.6