From d881b6e81e20267c192f6c05c628eecd061b0f42 Mon Sep 17 00:00:00 2001
From: midipix <writeonce@midipix.org>
Date: Sun, 17 Jul 2016 04:35:19 -0400
Subject: driver: added --sysroot support.

---
 src/driver/ptyc_driver_ctx.c      | 12 ++++++++++++
 src/internal/ptycon_driver_impl.h |  1 +
 src/skin/ptyc_skin_default.c      |  4 ++++
 3 files changed, 17 insertions(+)

(limited to 'src')

diff --git a/src/driver/ptyc_driver_ctx.c b/src/driver/ptyc_driver_ctx.c
index 459abe2..dfaa572 100644
--- a/src/driver/ptyc_driver_ctx.c
+++ b/src/driver/ptyc_driver_ctx.c
@@ -292,6 +292,10 @@ int ptyc_get_driver_ctx(
 					nunits++;
 					break;
 
+				case TAG_SYSROOT:
+					cctx.sysroot = entry->arg;
+					break;
+
 				case TAG_WAIT:
 					cctx.drvflags |= PTYC_DRIVER_DBG_WAIT;
 					break;
@@ -301,6 +305,14 @@ int ptyc_get_driver_ctx(
 			return ptyc_driver_usage(program,0,options,meta);
 	}
 
+	if (cctx.sysroot && ptyc_open_dir(&cctx.hroot,0,cctx.sysroot,false)) {
+		if (flags & PTYC_DRIVER_VERBOSITY_ERRORS)
+			fprintf(stderr,
+				"%s: error: could not open sysroot directory '%s'",
+				program,cctx.sysroot);
+		return ptyc_get_driver_ctx_fail(meta);
+	}
+
 	if (!(ctx = ptyc_driver_ctx_alloc(meta,&cctx,nunits)))
 		return ptyc_get_driver_ctx_fail(meta);
 
diff --git a/src/internal/ptycon_driver_impl.h b/src/internal/ptycon_driver_impl.h
index 67393ff..ee2e5ca 100644
--- a/src/internal/ptycon_driver_impl.h
+++ b/src/internal/ptycon_driver_impl.h
@@ -26,6 +26,7 @@ enum app_tags {
 	TAG_VERSION,
 	TAG_DAEMON,
 	TAG_DEBUG,
+	TAG_SYSROOT,
 	TAG_CAT,
 	TAG_EXEC,
 	TAG_WAIT,
diff --git a/src/skin/ptyc_skin_default.c b/src/skin/ptyc_skin_default.c
index 814f6c2..b558fff 100644
--- a/src/skin/ptyc_skin_default.c
+++ b/src/skin/ptyc_skin_default.c
@@ -17,6 +17,10 @@ const struct argv_option ptyc_default_options[] = {
 				ARGV_OPTION_HYBRID_ONLY | ARGV_OPTION_HYBRID_SPACE,
 				0,0,"synonym for --exec."},
 
+	{"sysroot",		0,TAG_SYSROOT,ARGV_OPTARG_REQUIRED,0,0,"<dir>",
+				"pass a handle to %s to the spawned child process, "
+				"and set it to be the child's intial root directory."},
+
 	{"daemon",		0,TAG_DAEMON,ARGV_OPTARG_OPTIONAL,0,"default|always|never",0,
 				"create a daemon thread and handle signals sent by the "
 				"application's own controlling terminal. The default is "
-- 
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