port to musl and add alpine CI build

.readthedocs.yaml

@@ -1,6 +1,11 @@
 # Required
 version: 2
 
+build:
+   os: ubuntu-22.04
+   tools:
+     python: "3.11"
+
 # Build documentation in the docs/ directory with Sphinx
 sphinx:
    configuration: doc/conf.py

src/imp/exec/exec.c

@@ -32,7 +32,7 @@
 #include <errno.h>
 #include <assert.h>
 #include <sys/types.h>
-#include <wait.h>
+#include <sys/wait.h>
 #include <jansson.h>
 
 #include "src/libutil/kv.h"

src/imp/pidinfo.c

@@ -29,6 +29,12 @@
 #ifdef HAVE_LINUX_MAGIC_H
 #include <linux/magic.h>
 #endif
+#ifndef TMPFS_MAGIC
+#define TMPFS_MAGIC 0x01021994 /* from linux/magic.h */
+#endif
+#ifndef CGROUP_SUPER_MAGIC
+#define CGROUP_SUPER_MAGIC 0x27e0eb
+#endif
 
 #include <pwd.h>
 #include <signal.h>

src/imp/test/pidinfo.c

@@ -11,7 +11,7 @@
 #include <stdio.h>
 #include <errno.h>
 #include <sys/types.h>
-#include <wait.h>
+#include <sys/wait.h>
 #include <unistd.h>
 #include <string.h>
 

src/lib/sign.h

@@ -11,6 +11,8 @@
 #ifndef _FLUX_SECURITY_SIGN_H
 #define _FLUX_SECURITY_SIGN_H
 
+#include <stdint.h>
+
 #ifdef __cplusplus
 extern "C" {
 #endif

src/libutil/test/cf.c

@@ -19,6 +19,7 @@
 #include <limits.h>
 #include <errno.h>
 #include <jansson.h>
+#include <glob.h>
 
 #include "src/libtap/tap.h"
 #include "cf.h"
@@ -79,7 +80,7 @@ static time_t strtotime (const char *s)
 {
     struct tm tm;
     time_t t;
-    if (!strptime (s, "%FT%TZ", &tm))
+    if (!strptime (s, "%Y-%m-%dT%TZ", &tm))
         BAIL_OUT ("strptime: %s failed", s);
     if ((t = timegm (&tm)) < 0)
         BAIL_OUT ("timegm: %s failed", s);
@@ -528,6 +529,7 @@ void test_update_glob (void)
     char path3[PATH_MAX + 1];
     char invalid[PATH_MAX + 1];
     char p [8192];
+    glob_t gl;
 
     cf_t *cf;
     const cf_t *cf2, *cf3;
@@ -567,18 +569,24 @@ void test_update_glob (void)
     ok ((cf3 = cf_get_in (cf, "tab3")) != NULL,
         "found tab3 table in cf");
 
+
     errno = 0;
     ok ((cf_update_glob (cf, "/noexist*", &error) == 0),
         "cf_update_glob returns 0 on no match");
     diag ("%s: %d: %s", error.filename, error.lineno, error.errbuf);
     like (error.errbuf, "[nN]o [mM]atch", "got expected error text");
 
-
+    /* Only run the following tests if this implementation of glob(3)
+     * returns GLOB_ABORTED when parent dir does not exist. This occurs
+     * for example on the musl libc version of glob(3).
+     */
+    skip (glob ("/noexist/*", GLOB_ERR, NULL, &gl) != GLOB_ABORTED, 2);
     errno = 0;
     ok ((cf_update_glob (cf, "/noexist/*", &error) < 0) && errno == EINVAL,
         "cf_update_glob fails on read error");
     diag ("%s: %d: %s", error.filename, error.lineno, error.errbuf);
     like (error.errbuf, "[rR]ead [eE]rror", "got expected error text");
+    end_skip;
 
     cf_destroy (cf);
 

src/libutil/test/tomltk.c

@@ -72,7 +72,7 @@ static bool check_ts (json_t *ts, const char *timestr)
         return false;
     if (!gmtime_r (&t, &tm))
         return false;
-    if (strftime (buf, sizeof (buf), "%FT%TZ", &tm) == 0)
+    if (strftime (buf, sizeof (buf), "%Y-%m-%dT%TZ", &tm) == 0)
         return false;
     diag ("%s: %s ?= %s", __FUNCTION__, buf, timestr);
     return !strcmp (buf, timestr);

src/libutil/timestamp.c

@@ -21,7 +21,7 @@ int timestamp_tostr (time_t t, char *buf, int size)
     struct tm tm;
     if (t < 0 || !gmtime_r (&t, &tm))
         return -1;
-    if (strftime (buf, size, "%FT%TZ", &tm) == 0)
+    if (strftime (buf, size, "%Y-%m-%dT%TZ", &tm) == 0)
         return -1;
     return 0;
 }
@@ -30,7 +30,7 @@ int timestamp_fromstr (const char *s, time_t *tp)
 {
     struct tm tm;
     time_t t;
-    if (!strptime (s, "%FT%TZ", &tm))
+    if (!strptime (s, "%Y-%m-%dT%TZ", &tm))
         return -1;
     if ((t = timegm (&tm)) < 0)
         return -1;

src/test/generate-matrix.py

@@ -155,4 +155,11 @@ def __str__(self):
     args="--enable-sanitizers",
     pam=False, # asan not compatible with PAM tests
 )
+
+# alpine
+matrix.add_build(
+    name="alpine",
+    image="alpine",
+)
+
 print(matrix)

t/src/getpwuid.c

@@ -24,22 +24,20 @@
 struct passwd *getpwuid (uid_t uid)
 {
     const char *filename;
-    static char buf[4096];
-    static struct passwd pw;
     struct passwd *pwp = NULL;
 
     if ((filename = getenv ("TEST_PASSWD_FILE"))) {
         FILE *f;
         if ((f = fopen (filename, "r"))) {
-            while (fgetpwent_r (f, &pw, buf, sizeof (buf), &pwp) == 0) {
+            while ((pwp = fgetpwent (f))) {
                 if (pwp->pw_uid == uid)
                     break;
             }
             (void)fclose (f);
         }
     }
     else
-        getpwuid_r (uid, &pw, buf, sizeof (buf), &pwp);
+        pwp = getpwuid (uid);
 
     if (pwp == NULL)
         errno = ENOENT;

t/src/sign.c

@@ -22,6 +22,7 @@
 #include <stdlib.h>
 #include <string.h>
 #include <errno.h>
+#include <stdint.h>
 
 #include "src/lib/context.h"
 #include "src/lib/sign.h"