Statically link libudev for Linux

.editorconfig

@@ -0,0 +1,16 @@
+root = true
+[*]
+indent_style=tab
+indent_size=tab
+tab_width=4
+end_of_line=lf
+charset=utf-8
+trim_trailing_whitespace=true
+max_line_length=120
+insert_final_newline=true
+
+[*.{yml,sh}]
+indent_style=space
+indent_size=2
+tab_width=8
+end_of_line=lf

.gitmodules

@@ -1,3 +1,6 @@
 [submodule "etc/hidapi"]
 	path = etc/hidapi
 	url = https://github.com/paritytech/hidapi.git
+[submodule "etc/eudev"]
+	path = etc/eudev
+	url = https://github.com/gentoo/eudev.git

build.rs

@@ -19,30 +19,91 @@
 
 extern crate cc;
 
+use std::process::Command;
 use std::env;
 
+// Copy-pasted from `https://github.com/paritytech/parity-ethereum/blob/cb03f380ab2bb37ff18771e6886c42098ad8b15a/docker/android/Dockerfile#L44-L62`
+const ANDROID_CFG: [&str; 5] = [
+	"git checkout 83d918449f22720d84a341a05e24b6d109e6d3ae",
+	"git apply ../libudev.patch",
+	"./autogen.sh",
+	"./configure --disable-introspection --disable-programs --disable-hwdb --host=arm-linux-androideabi --prefix=/opt/ndk-standalone/sysroot/usr/ --enable-shared=false",
+	"make"
+];
+
+const LINUX_CFG: [&str; 3] = [
+	"./autogen.sh",
+	"./configure",
+	"make"
+];
+
 fn main() {
-    let target = env::var("TARGET").unwrap();
-
-    if target.contains("windows") {
-        cc::Build::new()
-            .file("etc/hidapi/windows/hid.c")
-            .include("etc/hidapi/hidapi")
-            .compile("libhidapi.a");
-        println!("cargo:rustc-link-lib=setupapi");
-
-    } else if target.contains("darwin") {
-        cc::Build::new()
-            .file("etc/hidapi/mac/hid.c")
-            .include("etc/hidapi/hidapi")
-            .compile("libhidapi.a");
-        println!("cargo:rustc-link-lib=framework=IOKit");
-        println!("cargo:rustc-link-lib=framework=CoreFoundation");
-
-    } else if target.contains("linux") {
-        let mut config = cc::Build::new();
-        config.file("etc/hidapi/linux/hid.c").include("etc/hidapi/hidapi");
-        config.compile("libhidapi.a");
-        println!("cargo:rustc-link-lib=udev");
-    }
+	let target = env::var("TARGET").unwrap();
+
+	if target.contains("windows") {
+		cc::Build::new()
+			.file("etc/hidapi/windows/hid.c")
+			.include("etc/hidapi/hidapi")
+			.compile("libhidapi.a");
+		println!("cargo:rustc-link-lib=setupapi");
+
+	} else if target.contains("darwin") {
+		cc::Build::new()
+		.file("etc/hidapi/mac/hid.c")
+		.include("etc/hidapi/hidapi")
+		.compile("libhidapi.a");
+
+		println!("cargo:rustc-link-lib=framework=IOKit");
+		println!("cargo:rustc-link-lib=framework=CoreFoundation");
+
+	} else if target.contains("android") {
+		set_android_flags();
+		execute_shell_cmd(&ANDROID_CFG);
+		let mut config = cc::Build::new();
+		config.file("etc/hidapi/linux/hid.c").include("etc/hidapi/hidapi");
+		config.compile("libhidapi.a");
+
+		println!("cargo:rustc-link-search=native=./etc/eudev/src/libudev/.libs");
+		println!("cargo:rustc-link-lib=static=udev");
+	} else if target.contains("linux") {
+		execute_shell_cmd(&LINUX_CFG);
+		let mut config = cc::Build::new();
+		config.file("etc/hidapi/linux/hid.c").include("etc/hidapi/hidapi");
+		config.compile("libhidapi.a");
+
+		println!("cargo:rustc-link-search=native=./etc/eudev/src/libudev/.libs");
+		println!("cargo:rustc-link-lib=static=udev");
+	}
+}
+
+fn set_android_flags() {
+	env::set_var("CFLAGS", "-D LINE_MAX=2048 -D RLIMIT_NLIMITS=15 -D IPTOS_LOWCOST=2 -std=gnu99");
+	env::set_var("CXX", "arm-linux-androideabi-clang++");
+	env::set_var("CC", "arm-linux-androideabi-gcc");
+}
+
+fn execute_shell_cmd(commands: &[&str]) {
+	let start = std::env::current_dir().expect("Couldn't fetch current directory");
+	let target = std::path::Path::new(&start).join("etc/eudev");
+	env::set_current_dir(target).expect("Could not find the directory: \"etc\\eudev\"");
+
+	for full_cmd in commands.iter() {
+		let ignore_error = full_cmd.starts_with("git") && full_cmd.contains("apply");
+
+		let mut it = full_cmd.split_whitespace();
+		let cmd = it.next().expect("A command should have at least one element; qed");
+
+		let this_cmd = Command::new(cmd)
+			.args(it)
+			.status()
+			.expect(&format!("Command {} failed", cmd));
+
+	if !this_cmd.success() && !ignore_error {
+			panic!("{}", this_cmd);
+	} else if ignore_error {
+			println!("IGNORED \"git apply error\" {}", this_cmd);
+		}
+	}
+
+	env::set_current_dir(start).expect("Couldn't go back to start directory");
 }

etc/libudev.patch

@@ -0,0 +1,216 @@
+diff --git a/src/collect/collect.c b/src/collect/collect.c
+index 2cf1f00..b24f26b 100644
+--- a/src/collect/collect.c
++++ b/src/collect/collect.c
+@@ -84,7 +84,7 @@ static void usage(void)
+                "  invoked for each ID in <idlist>) collect returns 0, the\n"
+                "  number of missing IDs otherwise.\n"
+                "  On error a negative number is returned.\n\n"
+-               , program_invocation_short_name);
++               , "parity");
+ }
+
+ /*
+diff --git a/src/scsi_id/scsi_id.c b/src/scsi_id/scsi_id.c
+index 8b76d87..7bf3948 100644
+--- a/src/scsi_id/scsi_id.c
++++ b/src/scsi_id/scsi_id.c
+@@ -321,7 +321,7 @@ static void help(void) {
+                "  -u --replace-whitespace          Replace all whitespace by underscores\n"
+                "  -v --verbose                     Verbose logging\n"
+                "  -x --export                      Print values as environment keys\n"
+-               , program_invocation_short_name);
++               , "parity");
+
+ }
+
+diff --git a/src/shared/hashmap.h b/src/shared/hashmap.h
+index a03ee58..a7c2005 100644
+--- a/src/shared/hashmap.h
++++ b/src/shared/hashmap.h
+@@ -98,10 +98,7 @@ extern const struct hash_ops uint64_hash_ops;
+ #if SIZEOF_DEV_T != 8
+ unsigned long devt_hash_func(const void *p, const uint8_t hash_key[HASH_KEY_SIZE]) _pure_;
+ int devt_compare_func(const void *a, const void *b) _pure_;
+-extern const struct hash_ops devt_hash_ops = {
+-        .hash = devt_hash_func,
+-        .compare = devt_compare_func
+-};
++extern const struct hash_ops devt_hash_ops;
+ #else
+ #define devt_hash_func uint64_hash_func
+ #define devt_compare_func uint64_compare_func
+diff --git a/src/shared/log.c b/src/shared/log.c
+index 4a40996..1496984 100644
+--- a/src/shared/log.c
++++ b/src/shared/log.c
+@@ -335,7 +335,7 @@ static int write_to_syslog(
+
+         IOVEC_SET_STRING(iovec[0], header_priority);
+         IOVEC_SET_STRING(iovec[1], header_time);
+-        IOVEC_SET_STRING(iovec[2], program_invocation_short_name);
++        IOVEC_SET_STRING(iovec[2], "parity");
+         IOVEC_SET_STRING(iovec[3], header_pid);
+         IOVEC_SET_STRING(iovec[4], buffer);
+
+@@ -383,7 +383,7 @@ static int write_to_kmsg(
+         char_array_0(header_pid);
+
+         IOVEC_SET_STRING(iovec[0], header_priority);
+-        IOVEC_SET_STRING(iovec[1], program_invocation_short_name);
++        IOVEC_SET_STRING(iovec[1], "parity");
+         IOVEC_SET_STRING(iovec[2], header_pid);
+         IOVEC_SET_STRING(iovec[3], buffer);
+         IOVEC_SET_STRING(iovec[4], "\n");
+diff --git a/src/udev/udevadm-control.c b/src/udev/udevadm-control.c
+index 6af7163..3271e56 100644
+--- a/src/udev/udevadm-control.c
++++ b/src/udev/udevadm-control.c
+@@ -41,7 +41,7 @@ static void print_help(void) {
+                "  -p --property=KEY=VALUE  Set a global property for all events\n"
+                "  -m --children-max=N      Maximum number of children\n"
+                "     --timeout=SECONDS     Maximum time to block for a reply\n"
+-               , program_invocation_short_name);
++               , "parity");
+ }
+
+ static int adm_control(struct udev *udev, int argc, char *argv[]) {
+diff --git a/src/udev/udevadm-info.c b/src/udev/udevadm-info.c
+index 0aec976..a31ac02 100644
+--- a/src/udev/udevadm-info.c
++++ b/src/udev/udevadm-info.c
+@@ -279,7 +279,7 @@ static void help(void) {
+                "  -P --export-prefix          Export the key name with a prefix\n"
+                "  -e --export-db              Export the content of the udev database\n"
+                "  -c --cleanup-db             Clean up the udev database\n"
+-               , program_invocation_short_name);
++               , "parity");
+ }
+
+ static int uinfo(struct udev *udev, int argc, char *argv[]) {
+diff --git a/src/udev/udevadm-monitor.c b/src/udev/udevadm-monitor.c
+index 15ded09..b58dd08 100644
+--- a/src/udev/udevadm-monitor.c
++++ b/src/udev/udevadm-monitor.c
+@@ -73,7 +73,7 @@ static void help(void) {
+                "  -u --udev                                Print udev events\n"
+                "  -s --subsystem-match=SUBSYSTEM[/DEVTYPE] Filter events by subsystem\n"
+                "  -t --tag-match=TAG                       Filter events by tag\n"
+-               , program_invocation_short_name);
++               , "parity");
+ }
+
+ static int adm_monitor(struct udev *udev, int argc, char *argv[]) {
+diff --git a/src/udev/udevadm-settle.c b/src/udev/udevadm-settle.c
+index 33597bc..b36a504 100644
+--- a/src/udev/udevadm-settle.c
++++ b/src/udev/udevadm-settle.c
+@@ -43,7 +43,7 @@ static void help(void) {
+                "     --version              Show package version\n"
+                "  -t --timeout=SECONDS      Maximum time to wait for events\n"
+                "  -E --exit-if-exists=FILE  Stop waiting if file exists\n"
+-               , program_invocation_short_name);
++               , "parity");
+ }
+
+ static int adm_settle(struct udev *udev, int argc, char *argv[]) {
+diff --git a/src/udev/udevadm-test-builtin.c b/src/udev/udevadm-test-builtin.c
+index baaeca9..50ed812 100644
+--- a/src/udev/udevadm-test-builtin.c
++++ b/src/udev/udevadm-test-builtin.c
+@@ -39,7 +39,7 @@ static void help(struct udev *udev) {
+                "  -h --help     Print this message\n"
+                "     --version  Print version of the program\n\n"
+                "Commands:\n"
+-               , program_invocation_short_name);
++               , "parity");
+
+         udev_builtin_list(udev);
+ }
+diff --git a/src/udev/udevadm-test.c b/src/udev/udevadm-test.c
+index 47fd924..a855412 100644
+--- a/src/udev/udevadm-test.c
++++ b/src/udev/udevadm-test.c
+@@ -39,7 +39,7 @@ static void help(void) {
+                "     --version                         Show package version\n"
+                "  -a --action=ACTION                   Set action string\n"
+                "  -N --resolve-names=early|late|never  When to resolve names\n"
+-               , program_invocation_short_name);
++               , "parity");
+ }
+
+ static int adm_test(struct udev *udev, int argc, char *argv[]) {
+diff --git a/src/udev/udevadm-trigger.c b/src/udev/udevadm-trigger.c
+index 4dc756a..67787d3 100644
+--- a/src/udev/udevadm-trigger.c
++++ b/src/udev/udevadm-trigger.c
+@@ -92,7 +92,7 @@ static void help(void) {
+                "  -y --sysname-match=NAME           Trigger devices with this /sys path\n"
+                "     --name-match=NAME              Trigger devices with this /dev name\n"
+                "  -b --parent-match=NAME            Trigger devices with that parent device\n"
+-               , program_invocation_short_name);
++               , "parity");
+ }
+
+ static int adm_trigger(struct udev *udev, int argc, char *argv[]) {
+diff --git a/src/udev/udevadm.c b/src/udev/udevadm.c
+index 3e57cf6..b03dfaa 100644
+--- a/src/udev/udevadm.c
++++ b/src/udev/udevadm.c
+@@ -62,7 +62,7 @@ static int adm_help(struct udev *udev, int argc, char *argv[]) {
+         printf("%s [--help] [--version] [--debug] COMMAND [COMMAND OPTIONS]\n\n"
+                "Send control commands or test the device manager.\n\n"
+                "Commands:\n"
+-               , program_invocation_short_name);
++               , "parity");
+
+         for (i = 0; i < ELEMENTSOF(udevadm_cmds); i++)
+                 if (udevadm_cmds[i]->help != NULL)
+@@ -128,7 +128,7 @@ int main(int argc, char *argv[]) {
+                                 goto out;
+                         }
+
+-        fprintf(stderr, "%s: missing or unknown command\n", program_invocation_short_name);
++        fprintf(stderr, "%s: missing or unknown command\n", "parity");
+         rc = 2;
+ out:
+         mac_selinux_finish();
+diff --git a/src/udev/udevd.c b/src/udev/udevd.c
+index cf826c6..4eec0af 100644
+--- a/src/udev/udevd.c
++++ b/src/udev/udevd.c
+@@ -1041,7 +1041,7 @@ static void help(void) {
+                "  -t --event-timeout=SECONDS  Seconds to wait before terminating an event\n"
+                "  -N --resolve-names=early|late|never\n"
+                "                              When to resolve users and groups\n"
+-               , program_invocation_short_name);
++               , "parity");
+ }
+
+ static int parse_argv(int argc, char *argv[]) {
+diff --git a/src/v4l_id/v4l_id.c b/src/v4l_id/v4l_id.c
+index 1dce0d5..f65badf 100644
+--- a/src/v4l_id/v4l_id.c
++++ b/src/v4l_id/v4l_id.c
+@@ -49,7 +49,7 @@ int main(int argc, char *argv[]) {
+                         printf("%s [-h,--help] <device file>\n\n"
+                                "Video4Linux device identification.\n\n"
+                                "  -h  Print this message\n"
+-                               , program_invocation_short_name);
++                               , "parity");
+                         return 0;
+                 case '?':
+                         return -EINVAL;
+diff --git a/src/shared/path-util.c b/src/shared/path-util.c
+index 0744563..7151356 100644
+--- a/src/shared/path-util.c
++++ b/src/shared/path-util.c
+@@ -109,7 +109,7 @@ char *path_make_absolute_cwd(const char *p) {
+         if (path_is_absolute(p))
+                 return strdup(p);
+
+-        cwd = get_current_dir_name();
++        cwd = getcwd(malloc(128), 128);
+         if (!cwd)
+                 return NULL;
+