Date: Sun, 23 Aug 2020 20:25:10 +0000 (UTC) From: Edward Tomasz Napierala <trasz@FreeBSD.org> To: src-committers@freebsd.org, svn-src-all@freebsd.org, svn-src-stable@freebsd.org, svn-src-stable-12@freebsd.org Subject: svn commit: r364529 - in stable/12: share/man/man4 sys/amd64/linux sys/amd64/linux32 sys/arm64/linux sys/compat/linux sys/i386/linux Message-ID: <202008232025.07NKPAso021989@repo.freebsd.org>
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Author: trasz Date: Sun Aug 23 20:25:10 2020 New Revision: 364529 URL: https://svnweb.freebsd.org/changeset/base/364529 Log: MFC r355818: Add compat.linux.emul_path, so it can be set to something other than "/compat/linux". Useful when you have several compat directories with different Linux versions and you don't want to clash with files installed by linux-c7 packages. Sponsored by: The FreeBSD Foundation Modified: stable/12/share/man/man4/linux.4 stable/12/sys/amd64/linux/linux_sysvec.c stable/12/sys/amd64/linux32/linux32_sysvec.c stable/12/sys/arm64/linux/linux_sysvec.c stable/12/sys/compat/linux/linux_util.c stable/12/sys/compat/linux/linux_util.h stable/12/sys/i386/linux/linux_sysvec.c Directory Properties: stable/12/ (props changed) Modified: stable/12/share/man/man4/linux.4 ============================================================================== --- stable/12/share/man/man4/linux.4 Sun Aug 23 20:20:13 2020 (r364528) +++ stable/12/share/man/man4/linux.4 Sun Aug 23 20:25:10 2020 (r364529) @@ -24,7 +24,7 @@ .\" .\" $FreeBSD$ .\" -.Dd November 13, 2019 +.Dd December 16, 2019 .Dt LINUX 4 .Os .Sh NAME @@ -95,6 +95,10 @@ variables and .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 Modified: stable/12/sys/amd64/linux/linux_sysvec.c ============================================================================== --- stable/12/sys/amd64/linux/linux_sysvec.c Sun Aug 23 20:20:13 2020 (r364528) +++ stable/12/sys/amd64/linux/linux_sysvec.c Sun Aug 23 20:25:10 2020 (r364529) @@ -826,7 +826,7 @@ static Elf64_Brandinfo linux_glibc2brand = { .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, @@ -838,7 +838,7 @@ static Elf64_Brandinfo linux_glibc2brandshort = { .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, @@ -850,7 +850,7 @@ static Elf64_Brandinfo linux_muslbrand = { .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, Modified: stable/12/sys/amd64/linux32/linux32_sysvec.c ============================================================================== --- stable/12/sys/amd64/linux32/linux32_sysvec.c Sun Aug 23 20:20:13 2020 (r364528) +++ stable/12/sys/amd64/linux32/linux32_sysvec.c Sun Aug 23 20:25:10 2020 (r364529) @@ -1016,7 +1016,7 @@ static Elf32_Brandinfo linux_brand = { .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, @@ -1028,7 +1028,7 @@ static Elf32_Brandinfo linux_glibc2brand = { .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, @@ -1040,7 +1040,7 @@ static Elf32_Brandinfo linux_muslbrand = { .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, Modified: stable/12/sys/arm64/linux/linux_sysvec.c ============================================================================== --- stable/12/sys/arm64/linux/linux_sysvec.c Sun Aug 23 20:20:13 2020 (r364528) +++ stable/12/sys/arm64/linux/linux_sysvec.c Sun Aug 23 20:25:10 2020 (r364529) @@ -55,6 +55,7 @@ __FBSDID("$FreeBSD$"); #include <compat/linux/linux_ioctl.h> #include <compat/linux/linux_mib.h> #include <compat/linux/linux_misc.h> +#include <compat/linux/linux_util.h> #include <compat/linux/linux_vdso.h> MODULE_VERSION(linux64elf, 1); @@ -472,7 +473,7 @@ static Elf64_Brandinfo linux_glibc2brand = { .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, Modified: stable/12/sys/compat/linux/linux_util.c ============================================================================== --- stable/12/sys/compat/linux/linux_util.c Sun Aug 23 20:20:13 2020 (r364528) +++ stable/12/sys/compat/linux/linux_util.c Sun Aug 23 20:25:10 2020 (r364529) @@ -46,11 +46,13 @@ __FBSDID("$FreeBSD$"); #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 +60,11 @@ MALLOC_DEFINE(M_EPOLL, "lepoll", "Linux events structu 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), + "Linux runtime environment path"); /* * Search an alternate path before passing pathname arguments on to Modified: stable/12/sys/compat/linux/linux_util.h ============================================================================== --- stable/12/sys/compat/linux/linux_util.h Sun Aug 23 20:20:13 2020 (r364528) +++ stable/12/sys/compat/linux/linux_util.h Sun Aug 23 20:25:10 2020 (r364529) @@ -50,7 +50,7 @@ MALLOC_DECLARE(M_EPOLL); 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); Modified: stable/12/sys/i386/linux/linux_sysvec.c ============================================================================== --- stable/12/sys/i386/linux/linux_sysvec.c Sun Aug 23 20:20:13 2020 (r364528) +++ stable/12/sys/i386/linux/linux_sysvec.c Sun Aug 23 20:25:10 2020 (r364529) @@ -990,7 +990,7 @@ static Elf32_Brandinfo linux_brand = { .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, @@ -1002,7 +1002,7 @@ static Elf32_Brandinfo linux_glibc2brand = { .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, @@ -1014,7 +1014,7 @@ static Elf32_Brandinfo linux_muslbrand = { .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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