From: Darrick J. Wong <darrick.wong@xxxxxxxxxx>
Create a build-time helper program to generate a config file from the
built-in defaults.
Signed-off-by: Darrick J. Wong <darrick.wong@xxxxxxxxxx>
---
mkfs/Makefile | 14 ++++-
mkfs/mkconfig.c | 163 +++++++++++++++++++++++++++++++++++++++++++++++++++++++
2 files changed, 176 insertions(+), 1 deletion(-)
create mode 100644 mkfs/mkconfig.c
diff --git a/mkfs/Makefile b/mkfs/Makefile
index 102f5214..44ddbd30 100644
--- a/mkfs/Makefile
+++ b/mkfs/Makefile
@@ -12,13 +12,24 @@ CFILES = proto.c xfs_mkfs.c config.c defaults.c
CFGFILE_CFLAGS = -DMKFS_XFS_CONF_DIR=\"$(PKG_MKFS_CFG_DIR)\" \
-DMKFS_XFS_DEFAULT_CONFIG=\"$(PKG_MKFS_DEFAULT_CFGFILE)\"
+CFGFILE_TEMPLATE = $(PKG_MKFS_DEFAULT_CFGFILE).template
+
LCFLAGS += $(CFGFILE_CFLAGS)
LLDLIBS += $(LIBXFS) $(LIBXCMD) $(LIBFROG) $(LIBRT) $(LIBPTHREAD) $(LIBBLKID) \
$(LIBUUID)
LTDEPENDENCIES += $(LIBXFS) $(LIBXCMD) $(LIBFROG)
LLDFLAGS = -static-libtool-libs
+LDIRT = $(CFGFILE_TEMPLATE)
+
+default: depend $(CFGFILE_TEMPLATE) $(LTCOMMAND)
+
+mkconfig: mkconfig.c defaults.c
+ @echo " [CC] mkconfig"
+ $(Q) $(BUILD_CC) $(BUILD_CFLAGS) $(CFGFILE_CFLAGS) -o $@ $^
-default: depend $(LTCOMMAND)
+$(CFGFILE_TEMPLATE): mkconfig
+ @echo " [GENERATE] $@"
+ $(Q) ./mkconfig > $@
include $(BUILDRULES)
@@ -27,6 +38,7 @@ install: default
$(LTINSTALL) -m 755 $(LTCOMMAND) $(PKG_ROOT_SBIN_DIR)
$(INSTALL) -m 755 -d $(PKG_CFG_DIR)
$(INSTALL) -m 755 -d $(PKG_MKFS_CFG_DIR)
+ $(INSTALL) -m 644 $(CFGFILE_TEMPLATE) $(PKG_MKFS_CFG_DIR)
install-dev:
-include .dep
diff --git a/mkfs/mkconfig.c b/mkfs/mkconfig.c
new file mode 100644
index 00000000..3826b0bf
--- /dev/null
+++ b/mkfs/mkconfig.c
@@ -0,0 +1,163 @@
+// SPDX-License-Identifier: GPL-2.0+
+/*
+ * Copyright (C) 2018 Oracle. All Rights Reserved.
+ * Author: Darrick J. Wong <darrick.wong@xxxxxxxxxx>
+ */
+#include "libxfs.h"
+#include "config.h"
+
+enum cfgfile_var_type {
+ FV_BOOL = 0
+};
+
+struct subopt_map {
+ const char *suboptname;
+ const void *ptr;
+ enum cfgfile_var_type type;
+};
+
+/* Map all the config file options to their default_features equivalents. */
+struct confopts {
+ const char *name;
+ struct subopt_map subopts[CFG_MAX_SUBOPTS];
+} confopts_tab[] = {
+ {
+ .name = "data",
+ .subopts = {
+ [CFG_D_NOALIGN] = {
+ .suboptname = "noalign",
+ .ptr = &default_features.nodalign,
+ .type = FV_BOOL,
+ },
+ {NULL}
+ },
+ },
+ {
+ .name = "inode",
+ .subopts = {
+ [CFG_I_ALIGN] = {
+ .suboptname = "align",
+ .ptr = &default_features.inode_align,
+ .type = FV_BOOL,
+ },
+ [CFG_I_PROJID32BIT] = {
+ .suboptname = "projid32bit",
+ .ptr = &default_features.projid32bit,
+ .type = FV_BOOL,
+ },
+ [CFG_I_SPINODES] = {
+ .suboptname = "sparse",
+ .ptr = &default_features.spinodes,
+ .type = FV_BOOL,
+ },
+ {NULL}
+ },
+ },
+ {
+ .name = "log",
+ .subopts = {
+ [CFG_L_LAZYSBCNTR] = {
+ .suboptname = "lazy-count",
+ .ptr = &default_features.lazy_sb_counters,
+ .type = FV_BOOL,
+ },
+ {NULL}
+ },
+ },
+ {
+ .name = "metadata",
+ .subopts = {
+ [CFG_M_CRC] = {
+ .suboptname = "crc",
+ .ptr = &default_features.crcs_enabled,
+ .type = FV_BOOL,
+ },
+ [CFG_M_FINOBT] = {
+ .suboptname = "finobt",
+ .ptr = &default_features.finobt,
+ .type = FV_BOOL,
+ },
+ [CFG_M_RMAPBT] = {
+ .suboptname = "rmapbt",
+ .ptr = &default_features.rmapbt,
+ .type = FV_BOOL,
+ },
+ [CFG_M_REFLINK] = {
+ .suboptname = "reflink",
+ .ptr = &default_features.reflink,
+ .type = FV_BOOL,
+ },
+ {NULL}
+ },
+ },
+ {
+ .name = "naming",
+ .subopts = {
+ [CFG_N_FTYPE] = {
+ .suboptname = "ftype",
+ .ptr = &default_features.dirftype,
+ .type = FV_BOOL,
+ },
+ {NULL}
+ },
+ },
+ {
+ .name = "rtdev",
+ .subopts = {
+ [CFG_R_NOALIGN] = {
+ .suboptname = "noalign",
+ .ptr = &default_features.nortalign,
+ .type = FV_BOOL,
+ },
+ {NULL}
+ },
+ },
+};
+
+/* Spit out a config file template. */
+int
+main(
+ int argc,
+ char *argv[])
+{
+ struct confopts *opts = confopts_tab;
+ struct subopt_map *submap;
+ int c;
+ unsigned int i, j;
+
+ while ((c = getopt(argc, argv, "")) != EOF) {
+ switch (c) {
+ case '?':
+ fprintf(stderr, "Unknown option %c.\n", optopt);
+ return 1;
+ }
+ }
+ if (argc - optind != 0) {
+ fprintf(stderr, "extra arguments\n");
+ return 1;
+ }
+
+ printf("# mkfs.xfs configuration file to collect settings.\n");
+ printf("# See the mkfs.xfs(8) manpage for details.\n");
+ printf("# Copy this file to %s/%s to override the built-in defaults.\n",
+ MKFS_XFS_CONF_DIR, MKFS_XFS_DEFAULT_CONFIG);
+
+ for (i = 0; i < ARRAY_SIZE(confopts_tab); i++, opts++) {
+ if (i > 0)
+ printf("\n");
+ printf("[%s]\n", opts->name);
+ submap = opts->subopts;
+ for (j = 0;
+ j < ARRAY_SIZE(opts->subopts) && submap->suboptname;
+ j++, submap++) {
+ printf("%s = ", submap->suboptname);
+ switch (submap->type) {
+ case FV_BOOL:
+ printf("%d\n", *((bool *)submap->ptr));
+ break;
+ }
+ }
+ }
+
+ return 0;
+}
--
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