musl: Cherry-pick patch adding pthread_getname_np

pkg/musl/patch/0002-add-pthread_getname_np-function.patch

@@ -0,0 +1,58 @@
+From ffc49274d11cd77d0b6f92f6581f70e58871d370 Mon Sep 17 00:00:00 2001
+From: =?UTF-8?q?=C3=89rico=20Rolim?= <ericonr@disroot.org>
+Date: Tue, 20 Apr 2021 16:15:15 -0300
+Subject: [PATCH] add pthread_getname_np function
+
+based on the pthread_setname_np implementation
+---
+ include/pthread.h               |  1 +
+ src/thread/pthread_getname_np.c | 25 +++++++++++++++++++++++++
+ 2 files changed, 26 insertions(+)
+ create mode 100644 src/thread/pthread_getname_np.c
+
+diff --git a/include/pthread.h b/include/pthread.h
+index 0492f26a..89fd9ff7 100644
+--- a/include/pthread.h
++++ b/include/pthread.h
+@@ -221,6 +221,7 @@ int pthread_getaffinity_np(pthread_t, size_t, struct cpu_set_t *);
+ int pthread_setaffinity_np(pthread_t, size_t, const struct cpu_set_t *);
+ int pthread_getattr_np(pthread_t, pthread_attr_t *);
+ int pthread_setname_np(pthread_t, const char *);
++int pthread_getname_np(pthread_t, char *, size_t);
+ int pthread_getattr_default_np(pthread_attr_t *);
+ int pthread_setattr_default_np(const pthread_attr_t *);
+ int pthread_tryjoin_np(pthread_t, void **);
+diff --git a/src/thread/pthread_getname_np.c b/src/thread/pthread_getname_np.c
+new file mode 100644
+index 00000000..48d1a294
+--- /dev/null
++++ b/src/thread/pthread_getname_np.c
+@@ -0,0 +1,25 @@
++#define _GNU_SOURCE
++#include <fcntl.h>
++#include <unistd.h>
++#include <sys/prctl.h>
++
++#include "pthread_impl.h"
++
++int pthread_getname_np(pthread_t thread, char *name, size_t len)
++{
++	int fd, cs, status = 0;
++	char f[sizeof "/proc/self/task//comm" + 3*sizeof(int)];
++
++	if (len < 16) return ERANGE;
++
++	if (thread == pthread_self())
++		return prctl(PR_GET_NAME, (unsigned long)name, 0UL, 0UL, 0UL) ? errno : 0;
++
++	snprintf(f, sizeof f, "/proc/self/task/%d/comm", thread->tid);
++	pthread_setcancelstate(PTHREAD_CANCEL_DISABLE, &cs);
++	if ((fd = open(f, O_RDONLY|O_CLOEXEC)) < 0 || (len = read(fd, name, len)) < 0) status = errno;
++	else name[len-1] = 0; /* remove trailing new line only if successful */
++	if (fd >= 0) close(fd);
++	pthread_setcancelstate(cs, 0);
++	return status;
++}
+-- 
+2.32.0
+

pkg/musl/ver

@@ -1 +1 @@
-1.2.2 r1
+1.2.2 r2