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D22574.1793453846.diff
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Index: share/man/man4/linux.4
===================================================================
--- share/man/man4/linux.4
+++ share/man/man4/linux.4
@@ -95,6 +95,10 @@
.Xr loader 8
tunables:
.Bl -tag -width indent
+.It Va compat.linux.emul_path
+Path to the Linux run-time environment.
+Defaults to
+.Pa /compat/linux .
.It Va compat.linux.osname
Linux kernel operating system name.
.It Va compat.linux.osrelease
Index: sys/amd64/linux/linux_sysvec.c
===================================================================
--- sys/amd64/linux/linux_sysvec.c
+++ sys/amd64/linux/linux_sysvec.c
@@ -823,7 +823,7 @@
.brand = ELFOSABI_LINUX,
.machine = EM_X86_64,
.compat_3_brand = "Linux",
- .emul_path = "/compat/linux",
+ .emul_path = linux_emul_path,
.interp_path = "/lib64/ld-linux-x86-64.so.2",
.sysvec = &elf_linux_sysvec,
.interp_newpath = NULL,
@@ -835,7 +835,7 @@
.brand = ELFOSABI_LINUX,
.machine = EM_X86_64,
.compat_3_brand = "Linux",
- .emul_path = "/compat/linux",
+ .emul_path = linux_emul_path,
.interp_path = "/lib64/ld-linux.so.2",
.sysvec = &elf_linux_sysvec,
.interp_newpath = NULL,
@@ -847,7 +847,7 @@
.brand = ELFOSABI_LINUX,
.machine = EM_X86_64,
.compat_3_brand = "Linux",
- .emul_path = "/compat/linux",
+ .emul_path = linux_emul_path,
.interp_path = "/lib/ld-musl-x86_64.so.1",
.sysvec = &elf_linux_sysvec,
.interp_newpath = NULL,
Index: sys/amd64/linux32/linux32_sysvec.c
===================================================================
--- sys/amd64/linux32/linux32_sysvec.c
+++ sys/amd64/linux32/linux32_sysvec.c
@@ -977,7 +977,7 @@
.brand = ELFOSABI_LINUX,
.machine = EM_386,
.compat_3_brand = "Linux",
- .emul_path = "/compat/linux",
+ .emul_path = linux_emul_path,
.interp_path = "/lib/ld-linux.so.1",
.sysvec = &elf_linux_sysvec,
.interp_newpath = NULL,
@@ -989,7 +989,7 @@
.brand = ELFOSABI_LINUX,
.machine = EM_386,
.compat_3_brand = "Linux",
- .emul_path = "/compat/linux",
+ .emul_path = linux_emul_path,
.interp_path = "/lib/ld-linux.so.2",
.sysvec = &elf_linux_sysvec,
.interp_newpath = NULL,
@@ -1001,7 +1001,7 @@
.brand = ELFOSABI_LINUX,
.machine = EM_386,
.compat_3_brand = "Linux",
- .emul_path = "/compat/linux",
+ .emul_path = linux_emul_path,
.interp_path = "/lib/ld-musl-i386.so.1",
.sysvec = &elf_linux_sysvec,
.interp_newpath = NULL,
Index: sys/arm64/linux/linux_sysvec.c
===================================================================
--- sys/arm64/linux/linux_sysvec.c
+++ sys/arm64/linux/linux_sysvec.c
@@ -480,7 +480,7 @@
.brand = ELFOSABI_LINUX,
.machine = EM_AARCH64,
.compat_3_brand = "Linux",
- .emul_path = "/compat/linux",
+ .emul_path = linux_emul_path,
.interp_path = "/lib64/ld-linux-x86-64.so.2",
.sysvec = &elf_linux_sysvec,
.interp_newpath = NULL,
Index: sys/compat/linux/linux_util.h
===================================================================
--- sys/compat/linux/linux_util.h
+++ sys/compat/linux/linux_util.h
@@ -50,7 +50,7 @@
MALLOC_DECLARE(M_FUTEX);
MALLOC_DECLARE(M_FUTEX_WP);
-extern const char linux_emul_path[];
+extern char linux_emul_path[];
int linux_emul_convpath(struct thread *, const char *, enum uio_seg, char **, int, int);
Index: sys/compat/linux/linux_util.c
===================================================================
--- sys/compat/linux/linux_util.c
+++ sys/compat/linux/linux_util.c
@@ -46,11 +46,13 @@
#include <sys/proc.h>
#include <sys/sdt.h>
#include <sys/syscallsubr.h>
+#include <sys/sysctl.h>
#include <sys/systm.h>
#include <sys/vnode.h>
#include <machine/stdarg.h>
+#include <compat/linux/linux_mib.h>
#include <compat/linux/linux_util.h>
MALLOC_DEFINE(M_LINUX, "linux", "Linux mode structures");
@@ -58,7 +60,10 @@
MALLOC_DEFINE(M_FUTEX, "futex", "Linux futexes");
MALLOC_DEFINE(M_FUTEX_WP, "futex wp", "Linux futex waiting proc");
-const char linux_emul_path[] = "/compat/linux";
+char linux_emul_path[MAXPATHLEN] = "/compat/linux";
+
+SYSCTL_STRING(_compat_linux, OID_AUTO, emul_path, CTLFLAG_RWTUN,
+ linux_emul_path, sizeof(linux_emul_path), "Binary prefix path");
/*
* Search an alternate path before passing pathname arguments on to
Index: sys/i386/linux/linux_sysvec.c
===================================================================
--- sys/i386/linux/linux_sysvec.c
+++ sys/i386/linux/linux_sysvec.c
@@ -955,7 +955,7 @@
.brand = ELFOSABI_LINUX,
.machine = EM_386,
.compat_3_brand = "Linux",
- .emul_path = "/compat/linux",
+ .emul_path = linux_emul_path,
.interp_path = "/lib/ld-linux.so.1",
.sysvec = &elf_linux_sysvec,
.interp_newpath = NULL,
@@ -967,7 +967,7 @@
.brand = ELFOSABI_LINUX,
.machine = EM_386,
.compat_3_brand = "Linux",
- .emul_path = "/compat/linux",
+ .emul_path = linux_emul_path,
.interp_path = "/lib/ld-linux.so.2",
.sysvec = &elf_linux_sysvec,
.interp_newpath = NULL,
@@ -979,7 +979,7 @@
.brand = ELFOSABI_LINUX,
.machine = EM_386,
.compat_3_brand = "Linux",
- .emul_path = "/compat/linux",
+ .emul_path = linux_emul_path,
.interp_path = "/lib/ld-musl-i386.so.1",
.sysvec = &elf_linux_sysvec,
.interp_newpath = NULL,

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