Merge pull request #47308 from dtzWill/update/musl-upstream-fixes

musl: pick upstream fixes and improvements

pkgs/os-specific/linux/musl/default.nix

@@ -64,9 +64,16 @@ stdenv.mkDerivation rec {
     # Use execveat to impl fexecve when avail (useful for containers)
     ./fexecve-execveat.patch
     # improve behavior in few cases
-		./0001-in-pthread_mutex_trylock-EBUSY-out-more-directly-whe.patch
+    ./0001-in-pthread_mutex_trylock-EBUSY-out-more-directly-whe.patch
-		./0002-in-pthread_mutex_timedlock-avoid-repeatedly-reading-.patch
+    ./0002-in-pthread_mutex_timedlock-avoid-repeatedly-reading-.patch
-		./0003-fix-namespace-violation-for-c11-mutex-functions.patch
+    ./0003-fix-namespace-violation-for-c11-mutex-functions.patch
+    # Fix getaddrinfo usage encountered sometimes in containers
+    ./fix-getaddrinfo-regression-with-AI_ADDRCONFIG.patch
+    # name_to_handle_at
+    ./name-to-handle-at.patch
+    ./max-handle-sz-for-name-to-handle-at.patch
+    # stacksize bump (upstream)
+    ./stacksize-bump.patch
   ];
   preConfigure = ''
     configureFlagsArray+=("--syslibdir=$out/lib")

pkgs/os-specific/linux/musl/fix-getaddrinfo-regression-with-AI_ADDRCONFIG.patch

@@ -0,0 +1,52 @@
+From f381c118b2d4f7d914481d3cdc830ce41369b002 Mon Sep 17 00:00:00 2001
+From: Rich Felker <dalias@aerifal.cx>
+Date: Wed, 19 Sep 2018 18:03:22 -0400
+Subject: [PATCH] fix getaddrinfo regression with AI_ADDRCONFIG on some
+ configurations
+
+despite not being documented to do so in the standard or Linux
+documentation, attempts to udp connect to 127.0.0.1 or ::1 generate
+EADDRNOTAVAIL when the loopback device is not configured and there is
+no default route for IPv6. this caused getaddrinfo with AI_ADDRCONFIG
+to fail with EAI_SYSTEM and EADDRNOTAVAIL on some no-IPv6
+configurations, rather than the intended behavior of detecting IPv6 as
+unsuppported and producing IPv4-only results.
+
+previously, only EAFNOSUPPORT was treated as unavailability of the
+address family being probed. instead, treat all errors related to
+inability to get an address or route as conclusive that the family
+being probed is unsupported, and only fail with EAI_SYSTEM on other
+errors.
+
+further improvements may be desirable, such as reporting EAI_AGAIN
+instead of EAI_SYSTEM for errors which are expected to be transient,
+but this patch should suffice to fix the serious regression.
+---
+ src/network/getaddrinfo.c | 11 ++++++++++-
+ 1 file changed, 10 insertions(+), 1 deletion(-)
+
+diff --git a/src/network/getaddrinfo.c b/src/network/getaddrinfo.c
+index ba26847a..e33bfa28 100644
+--- a/src/network/getaddrinfo.c
++++ b/src/network/getaddrinfo.c
+@@ -76,7 +76,16 @@ int getaddrinfo(const char *restrict host, const char *restrict serv, const stru
+ 				close(s);
+ 				if (!r) continue;
+ 			}
+-			if (errno != EAFNOSUPPORT) return EAI_SYSTEM;
++			switch (errno) {
++			case EADDRNOTAVAIL:
++			case EAFNOSUPPORT:
++			case EHOSTUNREACH:
++			case ENETDOWN:
++			case ENETUNREACH:
++				break;
++			default:
++				return EAI_SYSTEM;
++			}
+ 			if (family == tf[i]) return EAI_NONAME;
+ 			family = tf[1-i];
+ 		}
+-- 
+2.19.0
+

pkgs/os-specific/linux/musl/max-handle-sz-for-name-to-handle-at.patch

@@ -0,0 +1,26 @@
+From 7d7f44253f2d8cfd0a7adf9f918d88aa24d4e012 Mon Sep 17 00:00:00 2001
+From: Khem Raj <raj.khem@gmail.com>
+Date: Thu, 13 Sep 2018 07:00:05 -0700
+Subject: [PATCH] define MAX_HANDLE_SZ for use with name_to_handle_at
+
+MAX_HANDLE_SZ is described in name_to_handle_at() to contain maximum
+expected size for a file handle
+---
+ include/fcntl.h | 1 +
+ 1 file changed, 1 insertion(+)
+
+diff --git a/include/fcntl.h b/include/fcntl.h
+index 99b21759..4d91338b 100644
+--- a/include/fcntl.h
++++ b/include/fcntl.h
+@@ -166,6 +166,7 @@ struct f_owner_ex {
+ };
+ #define FALLOC_FL_KEEP_SIZE 1
+ #define FALLOC_FL_PUNCH_HOLE 2
++#define MAX_HANDLE_SZ 128
+ #define SYNC_FILE_RANGE_WAIT_BEFORE 1
+ #define SYNC_FILE_RANGE_WRITE 2
+ #define SYNC_FILE_RANGE_WAIT_AFTER 4
+-- 
+2.19.0
+

pkgs/os-specific/linux/musl/name-to-handle-at.patch

@@ -0,0 +1,71 @@
+From 3e14bbcd1979376b188bfabb816ff828608fb5d7 Mon Sep 17 00:00:00 2001
+From: Khem Raj <raj.khem@gmail.com>
+Date: Wed, 12 Sep 2018 18:02:11 -0700
+Subject: [PATCH] wireup linux/name_to_handle_at and name_to_handle_at syscalls
+
+---
+ include/fcntl.h               |  7 +++++++
+ src/linux/name_to_handle_at.c | 10 ++++++++++
+ src/linux/open_by_handle_at.c |  8 ++++++++
+ 3 files changed, 25 insertions(+)
+ create mode 100644 src/linux/name_to_handle_at.c
+ create mode 100644 src/linux/open_by_handle_at.c
+
+diff --git a/include/fcntl.h b/include/fcntl.h
+index 6d8edcd1..99b21759 100644
+--- a/include/fcntl.h
++++ b/include/fcntl.h
+@@ -155,6 +155,11 @@ int lockf(int, int, off_t);
+ #define F_OWNER_PID 1
+ #define F_OWNER_PGRP 2
+ #define F_OWNER_GID 2
++struct file_handle {
++	unsigned handle_bytes;
++	int handle_type;
++	unsigned char f_handle[];
++};
+ struct f_owner_ex {
+ 	int type;
+ 	pid_t pid;
+@@ -170,6 +175,8 @@ struct f_owner_ex {
+ #define SPLICE_F_GIFT 8
+ int fallocate(int, int, off_t, off_t);
+ #define fallocate64 fallocate
++int name_to_handle_at(int, const char *, struct file_handle *, int *, int);
++int open_by_handle_at(int, struct file_handle *, int);
+ ssize_t readahead(int, off_t, size_t);
+ int sync_file_range(int, off_t, off_t, unsigned);
+ ssize_t vmsplice(int, const struct iovec *, size_t, unsigned);
+diff --git a/src/linux/name_to_handle_at.c b/src/linux/name_to_handle_at.c
+new file mode 100644
+index 00000000..cd4075bd
+--- /dev/null
++++ b/src/linux/name_to_handle_at.c
+@@ -0,0 +1,10 @@
++#define _GNU_SOURCE
++#include <fcntl.h>
++#include "syscall.h"
++
++int name_to_handle_at(int dirfd, const char *pathname,
++	struct file_handle *handle, int *mount_id, int flags)
++{
++	return syscall(SYS_name_to_handle_at, dirfd,
++		pathname, handle, mount_id, flags);
++}
+diff --git a/src/linux/open_by_handle_at.c b/src/linux/open_by_handle_at.c
+new file mode 100644
+index 00000000..1c9b6a2b
+--- /dev/null
++++ b/src/linux/open_by_handle_at.c
+@@ -0,0 +1,8 @@
++#define _GNU_SOURCE
++#include <fcntl.h>
++#include "syscall.h"
++
++int open_by_handle_at(int mount_fd, struct file_handle *handle, int flags)
++{
++	return syscall(SYS_open_by_handle_at, mount_fd, handle, flags);
++}
+-- 
+2.19.0
+

pkgs/os-specific/linux/musl/stacksize-bump.patch

@@ -0,0 +1,36 @@
+From c0058ab465e950c2c3302d2b62e21cc0b494224b Mon Sep 17 00:00:00 2001
+From: Rich Felker <dalias@aerifal.cx>
+Date: Tue, 18 Sep 2018 23:11:49 -0400
+Subject: [PATCH 3/4] increase default thread stack/guard size
+
+stack size default is increased from 80k to 128k. this coincides with
+Linux's hard-coded default stack for the main thread (128k is
+initially committed; growth beyond that up to ulimit is contingent on
+additional allocation succeeding) and GNU ld's default PT_GNU_STACK
+size for FDPIC, at least on sh.
+
+guard size default is increased from 4k to 8k to reduce the risk of
+guard page jumping on overflow, since use of just over 4k of stack is
+common (PATH_MAX buffers, etc.).
+---
+ src/internal/pthread_impl.h | 4 ++--
+ 1 file changed, 2 insertions(+), 2 deletions(-)
+
+diff --git a/src/internal/pthread_impl.h b/src/internal/pthread_impl.h
+index e73a251f..d491f975 100644
+--- a/src/internal/pthread_impl.h
++++ b/src/internal/pthread_impl.h
+@@ -185,8 +185,8 @@ hidden void __inhibit_ptc(void);
+ extern hidden unsigned __default_stacksize;
+ extern hidden unsigned __default_guardsize;
+ 
+-#define DEFAULT_STACK_SIZE 81920
+-#define DEFAULT_GUARD_SIZE 4096
++#define DEFAULT_STACK_SIZE 131072
++#define DEFAULT_GUARD_SIZE 8192
+ 
+ #define DEFAULT_STACK_MAX (8<<20)
+ #define DEFAULT_GUARD_MAX (1<<20)
+-- 
+2.19.0
+