Auto merge of #1340 - ibabushkin:mmap_flags, r=gnzlbg

Added MAP_FIXED_NOREPLACE and MAP_SHARED_VALIDATE consts.

This addresses #1339 and #1315. I believe the location of the constants is correct as-is, as both flags are linux-specific additions. Let me know if I missed anything.

ci/docker/aarch64-unknown-linux-musl/Dockerfile

@@ -3,14 +3,14 @@ FROM ubuntu:19.04
 RUN apt-get update && apt-get install -y --no-install-recommends \
   gcc make libc6-dev git curl ca-certificates \
   gcc-aarch64-linux-gnu qemu-user
-RUN curl --retry 5 https://www.musl-libc.org/releases/musl-1.1.19.tar.gz | \
+RUN curl --retry 5 https://www.musl-libc.org/releases/musl-1.1.22.tar.gz | \
     tar xzf - && \
-    cd musl-1.1.19 && \
+    cd musl-1.1.22 && \
     CC=aarch64-linux-gnu-gcc \
     ./configure --prefix=/musl-aarch64 --enable-wrapper=yes && \
     make install -j4 && \
     cd .. && \
-    rm -rf musl-1.1.19
+    rm -rf musl-1.1.22
 # Install linux kernel headers sanitized for use with musl
 RUN curl --retry 5 -L https://github.com/sabotage-linux/kernel-headers/archive/v3.12.6-6.tar.gz | \
     tar xzf - && \

ci/docker/arm-unknown-linux-musleabihf/Dockerfile

@@ -4,8 +4,8 @@ RUN apt-get update && apt-get install -y --no-install-recommends \
   gcc make libc6-dev git curl ca-certificates \
   gcc-arm-linux-gnueabihf qemu-user
 
-RUN curl --retry 5 https://www.musl-libc.org/releases/musl-1.1.19.tar.gz | tar xzf -
-WORKDIR /musl-1.1.19
+RUN curl --retry 5 https://www.musl-libc.org/releases/musl-1.1.22.tar.gz | tar xzf -
+WORKDIR /musl-1.1.22
 RUN CC=arm-linux-gnueabihf-gcc \
     CFLAGS="-march=armv6 -marm -mfpu=vfp" \
     ./configure --prefix=/musl-arm --enable-wrapper=yes

ci/docker/i686-unknown-linux-musl/Dockerfile

@@ -12,13 +12,13 @@ RUN apt-get install -y --no-install-recommends \
 #   since otherwise the script will fail to find a compiler.
 # * We manually unset CROSS_COMPILE when running make; otherwise the makefile
 #   will call the non-existent binary 'i686-ar'.
-RUN curl --retry 5 https://www.musl-libc.org/releases/musl-1.1.19.tar.gz | \
+RUN curl --retry 5 https://www.musl-libc.org/releases/musl-1.1.22.tar.gz | \
     tar xzf - && \
-    cd musl-1.1.19 && \
+    cd musl-1.1.22 && \
     CC=gcc CFLAGS=-m32 ./configure --prefix=/musl-i686 --disable-shared --target=i686 && \
     make CROSS_COMPILE= install -j4 && \
     cd .. && \
-    rm -rf musl-1.1.19
+    rm -rf musl-1.1.22
 # Install linux kernel headers sanitized for use with musl
 RUN curl --retry 5 -L https://github.com/sabotage-linux/kernel-headers/archive/v3.12.6-6.tar.gz | \
     tar xzf - && \

ci/docker/x86_64-unknown-linux-musl/Dockerfile

@@ -3,13 +3,13 @@ FROM ubuntu:19.04
 RUN apt-get update
 RUN apt-get install -y --no-install-recommends \
   gcc make libc6-dev git curl ca-certificates
-RUN curl --retry 5 https://www.musl-libc.org/releases/musl-1.1.19.tar.gz | \
+RUN curl --retry 5 https://www.musl-libc.org/releases/musl-1.1.22.tar.gz | \
     tar xzf - && \
-    cd musl-1.1.19 && \
+    cd musl-1.1.22 && \
     ./configure --prefix=/musl-x86_64 && \
     make install -j4 && \
     cd .. && \
-    rm -rf musl-1.1.19
+    rm -rf musl-1.1.22
 # Install linux kernel headers sanitized for use with musl
 RUN curl --retry 5 -L https://github.com/sabotage-linux/kernel-headers/archive/v3.12.6-6.tar.gz | \
     tar xzf - && \

src/unix/notbsd/linux/mips/mod.rs

@@ -334,6 +334,8 @@ pub const MAP_LOCKED: ::c_int = 0x8000;
 pub const MAP_POPULATE: ::c_int = 0x10000;
 pub const MAP_NONBLOCK: ::c_int = 0x20000;
 pub const MAP_STACK: ::c_int = 0x40000;
+pub const MAP_SHARED_VALIDATE: ::c_int = 0x3;
+pub const MAP_FIXED_NOREPLACE: ::c_int = 0x100000;
 
 pub const SOCK_STREAM: ::c_int = 2;
 pub const SOCK_DGRAM: ::c_int = 1;

src/unix/notbsd/linux/other/mod.rs

@@ -373,6 +373,8 @@ pub const MAP_EXECUTABLE: ::c_int = 0x01000;
 pub const MAP_POPULATE: ::c_int = 0x08000;
 pub const MAP_NONBLOCK: ::c_int = 0x010000;
 pub const MAP_STACK: ::c_int = 0x020000;
+pub const MAP_SHARED_VALIDATE: ::c_int = 0x3;
+pub const MAP_FIXED_NOREPLACE: ::c_int = 0x100000;
 
 pub const ENOTSUP: ::c_int = EOPNOTSUPP;
 pub const EUCLEAN: ::c_int = 117;

src/unix/notbsd/linux/s390x/mod.rs

@@ -517,6 +517,8 @@ pub const MAP_NORESERVE: ::c_int = 0x04000;
 pub const MAP_POPULATE: ::c_int = 0x08000;
 pub const MAP_NONBLOCK: ::c_int = 0x010000;
 pub const MAP_STACK: ::c_int = 0x020000;
+pub const MAP_SHARED_VALIDATE: ::c_int = 0x3;
+pub const MAP_FIXED_NOREPLACE: ::c_int = 0x100000;
 
 pub const EDEADLOCK: ::c_int = 35;
 pub const ENAMETOOLONG: ::c_int = 36;