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Include macOS sandbox files in the Nix binary

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This basically reverts 6e5165b773.
It fixes errors like

  sandbox-exec: <internal init prelude>:292:47: unable to open sandbox-minimal.sb: not found

when trying to run a development Nix installed in a user's home
directory.

Also, we're trying to minimize the number of installed files
to make it possible to deploy Nix as a single statically-linked
binary.
This commit is contained in:
Eelco Dolstra 2023-01-04 04:36:07 -08:00
parent d4d1ca8b11
commit 609a7dc059
5 changed files with 21 additions and 9 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

14
src/libstore/build/local-derivation-goal.cc
View file

@ -2050,10 +2050,14 @@ void LocalDerivationGoal::runChild()
sandboxProfile += "(deny default (with no-log))\n"; sandboxProfile += "(deny default (with no-log))\n";
} }
sandboxProfile += "(import \"sandbox-defaults.sb\")\n"; sandboxProfile +=
#include "sandbox-defaults.sb"
;
if (!derivationType.isSandboxed()) if (!derivationType.isSandboxed())
sandboxProfile += "(import \"sandbox-network.sb\")\n"; sandboxProfile +=
#include "sandbox-network.sb"
;
/* Add the output paths we'll use at build-time to the chroot */ /* Add the output paths we'll use at build-time to the chroot */
sandboxProfile += "(allow file-read* file-write* process-exec\n"; sandboxProfile += "(allow file-read* file-write* process-exec\n";
@ -2096,7 +2100,9 @@ void LocalDerivationGoal::runChild()
sandboxProfile += additionalSandboxProfile; sandboxProfile += additionalSandboxProfile;
} else } else
sandboxProfile += "(import \"sandbox-minimal.sb\")\n"; sandboxProfile +=
#include "sandbox-minimal.sb"
;
debug("Generated sandbox profile:"); debug("Generated sandbox profile:");
debug(sandboxProfile); debug(sandboxProfile);
@ -2121,8 +2127,6 @@ void LocalDerivationGoal::runChild()
args.push_back(sandboxFile); args.push_back(sandboxFile);
args.push_back("-D"); args.push_back("-D");
args.push_back("_GLOBAL_TMP_DIR=" + globalTmpDir); args.push_back("_GLOBAL_TMP_DIR=" + globalTmpDir);
args.push_back("-D");
args.push_back("IMPORT_DIR=" + settings.nixDataDir + "/nix/sandbox/");
if (allowLocalNetworking) { if (allowLocalNetworking) {
args.push_back("-D"); args.push_back("-D");
args.push_back(std::string("_ALLOW_LOCAL_NETWORKING=1")); args.push_back(std::string("_ALLOW_LOCAL_NETWORKING=1"));

4
src/libstore/local.mk
View file

@ -13,10 +13,6 @@ ifdef HOST_LINUX
libstore_LDFLAGS += -ldl libstore_LDFLAGS += -ldl
endif endif
ifdef HOST_DARWIN
libstore_FILES = sandbox-defaults.sb sandbox-minimal.sb sandbox-network.sb
endif
$(foreach file,$(libstore_FILES),$(eval $(call install-data-in,$(d)/$(file),$(datadir)/nix/sandbox))) $(foreach file,$(libstore_FILES),$(eval $(call install-data-in,$(d)/$(file),$(datadir)/nix/sandbox)))
ifeq ($(ENABLE_S3), 1) ifeq ($(ENABLE_S3), 1)

4
src/libstore/sandbox-defaults.sb
View file

@ -1,3 +1,5 @@
R""(
(define TMPDIR (param "_GLOBAL_TMP_DIR")) (define TMPDIR (param "_GLOBAL_TMP_DIR"))
(deny default) (deny default)
@ -104,3 +106,5 @@
(subpath "/System/Library/Apple/usr/libexec/oah") (subpath "/System/Library/Apple/usr/libexec/oah")
(subpath "/System/Library/LaunchDaemons/com.apple.oahd.plist") (subpath "/System/Library/LaunchDaemons/com.apple.oahd.plist")
(subpath "/Library/Apple/System/Library/LaunchDaemons/com.apple.oahd.plist")) (subpath "/Library/Apple/System/Library/LaunchDaemons/com.apple.oahd.plist"))
)""

4
src/libstore/sandbox-minimal.sb
View file

@ -1,5 +1,9 @@
R""(
(allow default) (allow default)
; Disallow creating setuid/setgid binaries, since that ; Disallow creating setuid/setgid binaries, since that
; would allow breaking build user isolation. ; would allow breaking build user isolation.
(deny file-write-setugid) (deny file-write-setugid)
)""

4
src/libstore/sandbox-network.sb
View file

@ -1,3 +1,5 @@
R""(
; Allow local and remote network traffic. ; Allow local and remote network traffic.
(allow network* (local ip) (remote ip)) (allow network* (local ip) (remote ip))
@ -18,3 +20,5 @@
; Allow access to trustd. ; Allow access to trustd.
(allow mach-lookup (global-name "com.apple.trustd")) (allow mach-lookup (global-name "com.apple.trustd"))
(allow mach-lookup (global-name "com.apple.trustd.agent")) (allow mach-lookup (global-name "com.apple.trustd.agent"))
)""