tree: Replace perror() with mx_log_err("... %m")

mx_util.c

@@ -1310,7 +1310,7 @@ time_t mx_clock_boottime() {
     struct timespec ts;
     int res = clock_gettime(CLOCK_BOOTTIME, &ts);
     if (res != 0) {
-        perror("clock_gettime");
+        mx_log_err("clock_gettime: %m");
     }
     return (ts.tv_sec);
 }
@@ -1350,7 +1350,7 @@ static char *mx_call_external_v(char *helper, char **argv) {
         close(pipefd[0]);
         dup2(pipefd[1], 1);
         execv(helper, argv);
-        perror(helper);
+        mx_log_err("%s: %m", helper);
         exit(1);
     }
     close(pipefd[1]);

mxqd.c

@@ -327,7 +327,7 @@ static int cpuset_init(struct mxq_server *server)
 static void read_hostconfig_retry(struct keywordset *kws) {
     char *line = mx_call_external("/usr/sbin/hostconfig", NULL);
     if (!line) {
-        perror("hostconfig");
+        mx_log_err("hostconfig: %m");
         exit(1);
     }
     keywordset_add(kws, line);
@@ -339,7 +339,7 @@ static char gpu_setup_script[] = LIBEXECDIR "/mxq/gpu-setup";
 static int get_gpus() {
     char *line = mx_call_external(gpu_setup_script, "init", NULL);
     if (!line) {
-        perror("gpu-setup init");
+        mx_log_err("gpu-setuo init: %m");
         exit(1);
     }
     int gpus = atoi(line);
@@ -356,13 +356,13 @@ static void read_cpufeatures(struct keywordset *kws) {
     size_t linebuflen = 0;
     FILE *proc_cpuinfo = fopen("/proc/cpuinfo","r");
     if (proc_cpuinfo == NULL) {
-        perror("/proc/cpuinfo");
+        mx_log_err("/proc/cpuinfo: %m");
         exit(1);
     }
     while (1) {
         ssize_t len = getline(&line, &linebuflen, proc_cpuinfo);
         if (len<0) {
-                perror("/proc/cpuinfo");
+                mx_log_err("/proc/cpuinfo: %m");
                 exit(1);
         }
         if(line[len-1] == '\n')
@@ -371,7 +371,7 @@ static void read_cpufeatures(struct keywordset *kws) {
         int i=sscanf(line,"flags : %n", &keywords);
         if (i==EOF) {
             if (ferror(proc_cpuinfo)) {
-                perror("/proc/cpuinfo");
+                mx_log_err("/proc/cpuinfo: %m");
                 exit(1);
             }
             fprintf(stderr,"%s: unexpected EOF during read\n","proc/cpuinfo");
@@ -910,7 +910,7 @@ static int init_child_process(struct mxq_group_list *glist, struct mxq_job *job)
         mx_asprintf_forever(&uid, "%u", group->user_uid);
         char *gpu_uuid = mx_call_external(gpu_setup_script, "job-init", pid, uid, NULL);
         if (!gpu_uuid) {
-            perror("gpu-setup job-init");
+            mx_log_err("gpu-setup job-init: %m");
             exit(1);
         }
         mx_setenv_forever("CUDA_VISIBLE_DEVICES", gpu_uuid);
@@ -2040,7 +2040,7 @@ static void release_gpu(struct mxq_server *server, struct mxq_group *group, stru
         char *gpu_uuid = mx_call_external(gpu_setup_script, "job-release", pid, NULL);
         free(pid);
         if (!gpu_uuid) {
-            perror("gpu-setup job-release");
+            mx_log_err("gpu-setup job-release: %m");
             exit(1);
         }
         free(gpu_uuid);

ppidcache.c

@@ -3,6 +3,7 @@
 #include "mx_util.h"
 #include "ppidcache.h"
 #include "mx_proc.h"
+#include "mx_log.h"
 
 struct entry {
     pid_t pid;
@@ -79,15 +80,15 @@ void ppidcache_scan(struct ppidcache *ppidcache) {
     ppidcache->count = 0;
     dir = opendir("/proc");
     if (dir == NULL) {
-        perror("/proc");
+        mx_log_err("/proc: %m");
         return;
     }
     while (1) {
         errno = 0;
         dirent = readdir(dir);
         if (dirent == NULL) {
             if (errno)
-                perror("/proc");
+                mx_log_err("/proc: %m");
             return;
         }
         if (strspn(dirent->d_name, "0123456789") != strlen(dirent->d_name))