liblvm base patches I

liblvm base patches I

[Thomas Woerner]

Here are the base patches for liblvm after cleanup. Splitting of create_toolcontext will follow in another patch and also error code and log message handling.

[PATCH 1/3] New parameter system_dir for create_toolcontext.

[Thomas Woerner]

cmd->sys_dir, which defaults to DEFAULT_SYS_DIR, will be set to system_dir i
the parameter is not NULL. If the environment variable LVM_SYSTEM_DIR is set
it will overwrite any value of cmd->sys_dir.

Signed-off-by: Thomas Woerner <twoerner@redhat.com>
---
 daemons/clvmd/lvm-functions.c |    4 ++--
 lib/commands/toolcontext.c    |   16 ++++++++++++++--
 lib/commands/toolcontext.h    |    9 +++++++--
 tools/lvmcmdline.c            |    4 ++--
 4 files changed, 25 insertions(+), 8 deletions(-)

diff --git a/daemons/clvmd/lvm-functions.c b/daemons/clvmd/lvm-functions.c
index 5cf7eff..d720802 100644
--- a/daemons/clvmd/lvm-functions.c
+++ b/daemons/clvmd/lvm-functions.c
@@ -1,6 +1,6 @@
 /*
  * Copyright (C) 2002-2004 Sistina Software, Inc. All rights reserved.
- * Copyright (C) 2004-2008 Red Hat, Inc. All rights reserved.
+ * Copyright (C) 2004-2009 Red Hat, Inc. All rights reserved.
  *
  * This file is part of LVM2.
  *
@@ -724,7 +724,7 @@ void lvm_do_backup(const char *vgname)
 /* Called to initialise the LVM context of the daemon */
 int init_lvm(int using_gulm)
 {
-	if (!(cmd = create_toolcontext(1))) {
+	if (!(cmd = create_toolcontext(1, NULL))) {
 		log_error("Failed to allocate command context");
 		return 0;
 	}
diff --git a/lib/commands/toolcontext.c b/lib/commands/toolcontext.c
index 0a98325..39c644c 100644
--- a/lib/commands/toolcontext.c
+++ b/lib/commands/toolcontext.c
@@ -1,6 +1,6 @@
 /*
  * Copyright (C) 2001-2004 Sistina Software, Inc. All rights reserved.
- * Copyright (C) 2004-2007 Red Hat, Inc. All rights reserved.
+ * Copyright (C) 2004-2009 Red Hat, Inc. All rights reserved.
  *
  * This file is part of LVM2.
  *
@@ -998,7 +998,8 @@ static void _init_globals(struct cmd_context *cmd)
 }
 
 /* Entry point */
-struct cmd_context *create_toolcontext(unsigned is_long_lived)
+struct cmd_context *create_toolcontext(unsigned is_long_lived,
+				       const char *system_dir)
 {
 	struct cmd_context *cmd;
 
@@ -1030,6 +1031,17 @@ struct cmd_context *create_toolcontext(unsigned is_long_lived)
 
 	strcpy(cmd->sys_dir, DEFAULT_SYS_DIR);
 
+	/*
+	 * cmd->sys_dir, which defaults to DEFAULT_SYS_DIR, will be set to 
+	 * system_dir if the parameter is not NULL. If the environment 
+	 * variable LVM_SYSTEM_DIR is set, it will overwrite any value of 
+	 * cmd->sys_dir.
+	 */
+        if (system_dir) {
+		strncpy(cmd->sys_dir, system_dir, sizeof(cmd->sys_dir));
+		cmd->sys_dir[sizeof(cmd->sys_dir) - 1] = '\0';
+	}
+
 	if (!_get_env_vars(cmd))
 		goto error;
 
diff --git a/lib/commands/toolcontext.h b/lib/commands/toolcontext.h
index 7d2aef9..eb2b6ef 100644
--- a/lib/commands/toolcontext.h
+++ b/lib/commands/toolcontext.h
@@ -1,6 +1,6 @@
 /*
  * Copyright (C) 2001-2004 Sistina Software, Inc. All rights reserved.  
- * Copyright (C) 2004-2007 Red Hat, Inc. All rights reserved.
+ * Copyright (C) 2004-2009 Red Hat, Inc. All rights reserved.
  *
  * This file is part of LVM2.
  *
@@ -94,7 +94,12 @@ struct cmd_context {
 	char sysfs_dir[PATH_MAX];
 };
 
-struct cmd_context *create_toolcontext(unsigned is_long_lived);
+/*
+ * cmd->sys_dir, which defaults to DEFAULT_SYS_DIR, will be set to system_dir 
+ * if the parameter is not NULL. If the environment variable LVM_SYSTEM_DIR is 
+ * set, it will overwrite any value of cmd->sys_dir.
+ */
+struct cmd_context *create_toolcontext(unsigned is_long_lived, const char *system_dir);
 void destroy_toolcontext(struct cmd_context *cmd);
 int refresh_toolcontext(struct cmd_context *cmd);
 int config_files_changed(struct cmd_context *cmd);
diff --git a/tools/lvmcmdline.c b/tools/lvmcmdline.c
index 880f31e..cb1bfc6 100644
--- a/tools/lvmcmdline.c
+++ b/tools/lvmcmdline.c
@@ -1,6 +1,6 @@
 /*
  * Copyright (C) 2001-2004 Sistina Software, Inc. All rights reserved.
- * Copyright (C) 2004-2007 Red Hat, Inc. All rights reserved.
+ * Copyright (C) 2004-2009 Red Hat, Inc. All rights reserved.
  *
  * This file is part of LVM2.
  *
@@ -1158,7 +1158,7 @@ struct cmd_context *init_lvm(void)
 
 	_cmdline.the_args = &_the_args[0];
 
-	if (!(cmd = create_toolcontext(0)))
+	if (!(cmd = create_toolcontext(0, NULL)))
 		return_NULL;
 
 	return cmd;
-- 
1.6.1.3

[PATCH 1/3] New parameter system_dir for create_toolcontext.

[Dave Wysochanski]

On Thu, 2009-02-19 at 20:01 +0100, Thomas Woerner wrote:
> cmd->sys_dir, which defaults to DEFAULT_SYS_DIR, will be set to system_dir i
> the parameter is not NULL. If the environment variable LVM_SYSTEM_DIR is set
> it will overwrite any value of cmd->sys_dir.
> 
> Signed-off-by: Thomas Woerner <twoerner@redhat.com>
> ---
>  daemons/clvmd/lvm-functions.c |    4 ++--
>  lib/commands/toolcontext.c    |   16 ++++++++++++++--
>  lib/commands/toolcontext.h    |    9 +++++++--
>  tools/lvmcmdline.c            |    4 ++--
>  4 files changed, 25 insertions(+), 8 deletions(-)
> 
> diff --git a/daemons/clvmd/lvm-functions.c b/daemons/clvmd/lvm-functions.c
> index 5cf7eff..d720802 100644
> --- a/daemons/clvmd/lvm-functions.c
> +++ b/daemons/clvmd/lvm-functions.c
> @@ -1,6 +1,6 @@
>  /*
>   * Copyright (C) 2002-2004 Sistina Software, Inc. All rights reserved.
> - * Copyright (C) 2004-2008 Red Hat, Inc. All rights reserved.
> + * Copyright (C) 2004-2009 Red Hat, Inc. All rights reserved.
>   *
>   * This file is part of LVM2.
>   *
> @@ -724,7 +724,7 @@ void lvm_do_backup(const char *vgname)
>  /* Called to initialise the LVM context of the daemon */
>  int init_lvm(int using_gulm)
>  {
> -	if (!(cmd = create_toolcontext(1))) {
> +	if (!(cmd = create_toolcontext(1, NULL))) {
>  		log_error("Failed to allocate command context");
>  		return 0;
>  	}
> diff --git a/lib/commands/toolcontext.c b/lib/commands/toolcontext.c
> index 0a98325..39c644c 100644
> --- a/lib/commands/toolcontext.c
> +++ b/lib/commands/toolcontext.c
> @@ -1,6 +1,6 @@
>  /*
>   * Copyright (C) 2001-2004 Sistina Software, Inc. All rights reserved.
> - * Copyright (C) 2004-2007 Red Hat, Inc. All rights reserved.
> + * Copyright (C) 2004-2009 Red Hat, Inc. All rights reserved.
>   *
>   * This file is part of LVM2.
>   *
> @@ -998,7 +998,8 @@ static void _init_globals(struct cmd_context *cmd)
>  }
>  
>  /* Entry point */
> -struct cmd_context *create_toolcontext(unsigned is_long_lived)
> +struct cmd_context *create_toolcontext(unsigned is_long_lived,
> +				       const char *system_dir)
>  {
>  	struct cmd_context *cmd;
>  
> @@ -1030,6 +1031,17 @@ struct cmd_context *create_toolcontext(unsigned is_long_lived)
>  
>  	strcpy(cmd->sys_dir, DEFAULT_SYS_DIR);
>  
> +	/*
> +	 * cmd->sys_dir, which defaults to DEFAULT_SYS_DIR, will be set to 
> +	 * system_dir if the parameter is not NULL. If the environment 
> +	 * variable LVM_SYSTEM_DIR is set, it will overwrite any value of 
> +	 * cmd->sys_dir.
> +	 */
> +        if (system_dir) {
> +		strncpy(cmd->sys_dir, system_dir, sizeof(cmd->sys_dir));
> +		cmd->sys_dir[sizeof(cmd->sys_dir) - 1] = '\0';
> +	}
> +
>  	if (!_get_env_vars(cmd))
>  		goto error;
>  
> diff --git a/lib/commands/toolcontext.h b/lib/commands/toolcontext.h
> index 7d2aef9..eb2b6ef 100644
> --- a/lib/commands/toolcontext.h
> +++ b/lib/commands/toolcontext.h
> @@ -1,6 +1,6 @@
>  /*
>   * Copyright (C) 2001-2004 Sistina Software, Inc. All rights reserved.  
> - * Copyright (C) 2004-2007 Red Hat, Inc. All rights reserved.
> + * Copyright (C) 2004-2009 Red Hat, Inc. All rights reserved.
>   *
>   * This file is part of LVM2.
>   *
> @@ -94,7 +94,12 @@ struct cmd_context {
>  	char sysfs_dir[PATH_MAX];
>  };
>  
> -struct cmd_context *create_toolcontext(unsigned is_long_lived);
> +/*
> + * cmd->sys_dir, which defaults to DEFAULT_SYS_DIR, will be set to system_dir 
> + * if the parameter is not NULL. If the environment variable LVM_SYSTEM_DIR is 
> + * set, it will overwrite any value of cmd->sys_dir.
> + */
> +struct cmd_context *create_toolcontext(unsigned is_long_lived, const char *system_dir);
>  void destroy_toolcontext(struct cmd_context *cmd);
>  int refresh_toolcontext(struct cmd_context *cmd);
>  int config_files_changed(struct cmd_context *cmd);
> diff --git a/tools/lvmcmdline.c b/tools/lvmcmdline.c
> index 880f31e..cb1bfc6 100644
> --- a/tools/lvmcmdline.c
> +++ b/tools/lvmcmdline.c
> @@ -1,6 +1,6 @@
>  /*
>   * Copyright (C) 2001-2004 Sistina Software, Inc. All rights reserved.
> - * Copyright (C) 2004-2007 Red Hat, Inc. All rights reserved.
> + * Copyright (C) 2004-2009 Red Hat, Inc. All rights reserved.
>   *
>   * This file is part of LVM2.
>   *
> @@ -1158,7 +1158,7 @@ struct cmd_context *init_lvm(void)
>  
>  	_cmdline.the_args = &_the_args[0];
>  
> -	if (!(cmd = create_toolcontext(0)))
> +	if (!(cmd = create_toolcontext(0, NULL)))
>  		return_NULL;
>  
>  	return cmd;

Ack.

[PATCH 2/3] Added more version defines to tools/version.h.in.

[Thomas Woerner]

Modified tools/version.h.in and configure.in:
New defines LVM_MAJOR, LVM_MINOR, LVM_PATCHLEVEL and LVM_RELEASE generated in
configure. Maybe a rename of version.h.in to lvm_version.h.in would be good to
prevent name conflicts with other projects. Added GPL header to version.h.in.

TODO: recreate configure

Signed-off-by: Thomas Woerner <twoerner@redhat.com>
---
 configure.in       |   13 ++++++++++++-
 tools/version.h.in |   27 +++++++++++++++++++++++++++
 2 files changed, 39 insertions(+), 1 deletions(-)

diff --git a/configure.in b/configure.in
index ea77eff..02a9bbb 100644
--- a/configure.in
+++ b/configure.in
@@ -1,6 +1,6 @@
 ###############################################################################
 ## Copyright (C) 2000-2004 Sistina Software, Inc. All rights reserved.
-## Copyright (C) 2004-2008 Red Hat, Inc. All rights reserved.
+## Copyright (C) 2004-2009 Red Hat, Inc. All rights reserved.
 ##
 ## This copyrighted material is made available to anyone wishing to use,
 ## modify, copy, or redistribute it subject to the terms and conditions
@@ -723,6 +723,13 @@ DM_LIB_PATCHLEVEL=`cat VERSION_DM | awk -F '[[-. ]]' '{printf "%s.%s.%s",$1,$2,$
 
 LVM_VERSION="\"`cat VERSION 2>/dev/null || echo Unknown`\""
 
+VER=`cat VERSION | awk '{print $1}'`
+echo "$VER" | grep -qi "cvs" && LVM_RELEASE=\"cvs\" || LVM_RELEASE=\"\"
+VER=`echo "$VER" | awk -F '-' '{print $1}'`
+LVM_MAJOR=`echo "$VER" | awk -F '.' '{printf "%s",$1}'`
+LVM_MINOR=`echo "$VER" | awk -F '.' '{printf "%s",$2}'`
+LVM_PATCHLEVEL=`echo "$VER" | awk -F '.' '{printf "%s",$3}'`
+
 ################################################################################
 AC_SUBST(BUILD_DMEVENTD)
 AC_SUBST(CFLAGS)
@@ -761,6 +768,10 @@ AC_SUBST(LVM1)
 AC_SUBST(LVM1_FALLBACK)
 AC_SUBST(CONFDIR)
 AC_SUBST(LVM_VERSION)
+AC_SUBST(LVM_MAJOR)
+AC_SUBST(LVM_MINOR)
+AC_SUBST(LVM_PATCHLEVEL)
+AC_SUBST(LVM_RELEASE)
 AC_SUBST(MIRRORS)
 AC_SUBST(MSGFMT)
 AC_SUBST(OWNER)
diff --git a/tools/version.h.in b/tools/version.h.in
index a122792..f41fcae 100644
--- a/tools/version.h.in
+++ b/tools/version.h.in
@@ -1,3 +1,30 @@
+/*
+ * Copyright (C) 2001-2004 Sistina Software, Inc. All rights reserved.  
+ * Copyright (C) 2004-2009 Red Hat, Inc. All rights reserved.
+ *
+ * This file is part of LVM2.
+ *
+ * This copyrighted material is made available to anyone wishing to use,
+ * modify, copy, or redistribute it subject to the terms and conditions
+ * of the GNU Lesser General Public License v.2.1.
+ *
+ * You should have received a copy of the GNU Lesser General Public License
+ * along with this program; if not, write to the Free Software Foundation,
+ * Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
+ */
+
 #ifndef _LVM_VERSION_H
+/**
+ * The LVM version number
+ *
+ * LVM_MAJOR.LVM_MINOR.LVM_PATCHLEVEL[-LVM_RELEASE]
+ *
+ * If the LVM release tag contains "cvs" then it is a development snapshot.
+ */
+
 #define LVM_VERSION @LVM_VERSION@
+#define LVM_MAJOR @LVM_MAJOR@
+#define LVM_MINOR @LVM_MINOR@
+#define LVM_PATCHLEVEL @LVM_PATCHLEVEL@
+#define LVM_RELEASE @LVM_RELEASE@
 #endif
-- 
1.6.1.3

[PATCH 2/3] Added more version defines to tools/version.h.in.

[Dave Wysochanski]

On Thu, 2009-02-19 at 20:01 +0100, Thomas Woerner wrote:
> Modified tools/version.h.in and configure.in:
> New defines LVM_MAJOR, LVM_MINOR, LVM_PATCHLEVEL and LVM_RELEASE generated in
> configure. Maybe a rename of version.h.in to lvm_version.h.in would be good to
> prevent name conflicts with other projects. Added GPL header to version.h.in.
> 
> TODO: recreate configure
> 
> Signed-off-by: Thomas Woerner <twoerner@redhat.com>
> ---
>  configure.in       |   13 ++++++++++++-
>  tools/version.h.in |   27 +++++++++++++++++++++++++++
>  2 files changed, 39 insertions(+), 1 deletions(-)
> 
> diff --git a/configure.in b/configure.in
> index ea77eff..02a9bbb 100644
> --- a/configure.in
> +++ b/configure.in
> @@ -1,6 +1,6 @@
>  ###############################################################################
>  ## Copyright (C) 2000-2004 Sistina Software, Inc. All rights reserved.
> -## Copyright (C) 2004-2008 Red Hat, Inc. All rights reserved.
> +## Copyright (C) 2004-2009 Red Hat, Inc. All rights reserved.
>  ##
>  ## This copyrighted material is made available to anyone wishing to use,
>  ## modify, copy, or redistribute it subject to the terms and conditions
> @@ -723,6 +723,13 @@ DM_LIB_PATCHLEVEL=`cat VERSION_DM | awk -F '[[-. ]]' '{printf "%s.%s.%s",$1,$2,$
>  
>  LVM_VERSION="\"`cat VERSION 2>/dev/null || echo Unknown`\""
>  
> +VER=`cat VERSION | awk '{print $1}'`
> +echo "$VER" | grep -qi "cvs" && LVM_RELEASE=\"cvs\" || LVM_RELEASE=\"\"
> +VER=`echo "$VER" | awk -F '-' '{print $1}'`
> +LVM_MAJOR=`echo "$VER" | awk -F '.' '{printf "%s",$1}'`
> +LVM_MINOR=`echo "$VER" | awk -F '.' '{printf "%s",$2}'`
> +LVM_PATCHLEVEL=`echo "$VER" | awk -F '.' '{printf "%s",$3}'`
> +
>  ################################################################################
>  AC_SUBST(BUILD_DMEVENTD)
>  AC_SUBST(CFLAGS)
> @@ -761,6 +768,10 @@ AC_SUBST(LVM1)
>  AC_SUBST(LVM1_FALLBACK)
>  AC_SUBST(CONFDIR)
>  AC_SUBST(LVM_VERSION)
> +AC_SUBST(LVM_MAJOR)
> +AC_SUBST(LVM_MINOR)
> +AC_SUBST(LVM_PATCHLEVEL)
> +AC_SUBST(LVM_RELEASE)
>  AC_SUBST(MIRRORS)
>  AC_SUBST(MSGFMT)
>  AC_SUBST(OWNER)
> diff --git a/tools/version.h.in b/tools/version.h.in
> index a122792..f41fcae 100644
> --- a/tools/version.h.in
> +++ b/tools/version.h.in
> @@ -1,3 +1,30 @@
> +/*
> + * Copyright (C) 2001-2004 Sistina Software, Inc. All rights reserved.  
> + * Copyright (C) 2004-2009 Red Hat, Inc. All rights reserved.
> + *
> + * This file is part of LVM2.
> + *
> + * This copyrighted material is made available to anyone wishing to use,
> + * modify, copy, or redistribute it subject to the terms and conditions
> + * of the GNU Lesser General Public License v.2.1.
> + *
> + * You should have received a copy of the GNU Lesser General Public License
> + * along with this program; if not, write to the Free Software Foundation,
> + * Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
> + */
> +
>  #ifndef _LVM_VERSION_H
> +/**
> + * The LVM version number
> + *
> + * LVM_MAJOR.LVM_MINOR.LVM_PATCHLEVEL[-LVM_RELEASE]
> + *
> + * If the LVM release tag contains "cvs" then it is a development snapshot.
> + */
> +
>  #define LVM_VERSION @LVM_VERSION@
> +#define LVM_MAJOR @LVM_MAJOR@
> +#define LVM_MINOR @LVM_MINOR@
> +#define LVM_PATCHLEVEL @LVM_PATCHLEVEL@
> +#define LVM_RELEASE @LVM_RELEASE@
>  #endif

Ack.  Will you generate configure or someone else?

[PATCH 3/3] New base files needed for liblvm with doxygen style descriptions.

[Thomas Woerner]

Added files lib/lvm.h and lib/lvm_base.c:
New structure lvm (used as an alias to cmd_context), new type definition lvm_t
for the lvm handle. Added functions lvm_create, lvm_destroy and
lvm_reload_config using the new handle.

Modified test/api/test.c:
Use new lvm.h header file and lvm_t handle.

Removed lib/lvm2.h

Signed-off-by: Thomas Woerner <twoerner@redhat.com>
---
 lib/Makefile.in |    5 ++-
 lib/lvm.h       |   57 +++++++++++++++++++++++++++++++++++++++++++++++++++++++
 lib/lvm2.h      |   53 ---------------------------------------------------
 test/api/test.c |   17 +++++++--------
 4 files changed, 68 insertions(+), 64 deletions(-)
 create mode 100644 lib/lvm.h
 delete mode 100644 lib/lvm2.h

diff --git a/lib/Makefile.in b/lib/Makefile.in
index 54092cd..47786a7 100644
--- a/lib/Makefile.in
+++ b/lib/Makefile.in
@@ -1,6 +1,6 @@
 #
 # Copyright (C) 2001-2004 Sistina Software, Inc. All rights reserved.
-# Copyright (C) 2004-2007 Red Hat, Inc. All rights reserved.
+# Copyright (C) 2004-2009 Red Hat, Inc. All rights reserved.
 #
 # This file is part of LVM2.
 #
@@ -86,7 +86,8 @@ SOURCES =\
 	report/report.c \
 	striped/striped.c \
 	uuid/uuid.c \
-	zero/zero.c
+	zero/zero.c \
+	lvm_base.c
 
 ifeq ("@LVM1@", "internal")
   SOURCES +=\
diff --git a/lib/lvm.h b/lib/lvm.h
new file mode 100644
index 0000000..09ff680
--- /dev/null
+++ b/lib/lvm.h
@@ -0,0 +1,57 @@
+/*
+ * Copyright (C) 2008,2009 Red Hat, Inc. All rights reserved.
+ *
+ * This file is part of LVM2.
+ *
+ * This copyrighted material is made available to anyone wishing to use,
+ * modify, copy, or redistribute it subject to the terms and conditions
+ * of the GNU Lesser General Public License v.2.1.
+ *
+ * You should have received a copy of the GNU Lesser General Public License
+ * along with this program; if not, write to the Free Software Foundation,
+ * Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
+ */
+#ifndef _LIB_LVM_H
+#define _LIB_LVM_H
+
+#include "version.h"
+
+#include <stdint.h>
+
+struct lvm; /* internal data */
+
+/**
+ * The lvm handle.
+ */
+typedef struct lvm *lvm_t;
+
+/**
+ * Create a LVM handle.
+ *
+ * \param   system_dir
+ *          Set an alternative system path or NULL for the default value. If
+ *          the environment variable LVM_SYSTEM_DIR is set, it will overwrite
+ *          this value.
+ * \return  A valid LVM handle is returned or NULL if there has been a
+ *          memory allocation problem. You have to check if an error occured
+ *          with the lvm_error function.
+ */
+lvm_t lvm_create(const char *system_dir);
+
+/**
+ * Destroy a LVM handle allocated with lvm_create.
+ *
+ * \param   libh
+ *          Handle obtained from lvm_create.
+ */
+void lvm_destroy(lvm_t libh);
+
+/**
+ * Reload the original configuration from the system directory.
+ *
+ * \param   libh
+ *          Handle obtained from lvm_create.
+ */
+int lvm_reload_config(lvm_t libh);
+
+#endif /* _LIB_LVM_H */
diff --git a/lib/lvm2.h b/lib/lvm2.h
deleted file mode 100644
index b18cead..0000000
--- a/lib/lvm2.h
+++ /dev/null
@@ -1,53 +0,0 @@
-/*
- * Copyright (C) 2001-2004 Sistina Software, Inc. All rights reserved.  
- * Copyright (C) 2004-2008 Red Hat, Inc. All rights reserved.
- *
- * This file is part of LVM2.
- *
- * This copyrighted material is made available to anyone wishing to use,
- * modify, copy, or redistribute it subject to the terms and conditions
- * of the GNU Lesser General Public License v.2.1.
- *
- * You should have received a copy of the GNU Lesser General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
- */
-#ifndef _LIB_LVM2_H
-#define _LIB_LVM2_H
-
-#include <stdint.h>
-
-/*
- * Library Initialisation
- * FIXME: For now just #define lvm2_create() and lvm2_destroy() to 
- * create_toolcontext() and destroy_toolcontext()
- */
-struct arg;
-struct cmd_context;
-struct cmd_context *create_toolcontext(unsigned is_long_lived);
-void destroy_toolcontext(struct cmd_context *cmd);
-
-/*
- * lvm2_create
-lvm_handle_t lvm2_create(void);
- *
- * Description: Create an LVM2 handle used in many other APIs.
- *
- * Returns:
- * NULL: Fail - unable to initialise handle.
- * non-NULL: Success - valid LVM2 handle returned
- */
-#define lvm2_create(X) create_toolcontext(1)
-
-/*
- * lvm2_destroy
-void lvm2_destroy(lvm_handle_t h);
- *
- * Description: Destroy an LVM2 handle allocated with lvm2_create
- *
- * Parameters:
- * - h (IN): handle obtained from lvm2_create
- */
-#define lvm2_destroy(X) destroy_toolcontext(X)
-
-#endif
diff --git a/test/api/test.c b/test/api/test.c
index de53c46..b742976 100644
--- a/test/api/test.c
+++ b/test/api/test.c
@@ -1,6 +1,6 @@
 /*
  * Copyright (C) 2001-2004 Sistina Software, Inc. All rights reserved.  
- * Copyright (C) 2004-2008 Red Hat, Inc. All rights reserved.
+ * Copyright (C) 2004-2009 Red Hat, Inc. All rights reserved.
  *
  * This file is part of LVM2.
  *
@@ -16,7 +16,7 @@
 #include <string.h>
 #include <stdlib.h>
 #include <readline/readline.h>
-#include "lvm2.h"
+#include "lvm.h"
 
 #define MAX_ARGS 64
 
@@ -48,7 +48,7 @@ static int lvm_split(char *str, int *argc, char **argv, int max)
 	return *argc;
 }
 
-static int lvmapi_test_shell(void *h)
+static int lvmapi_test_shell(lvm_t libh)
 {
 	int argc, i;
 	char *input = NULL, *args[MAX_ARGS], **argv;
@@ -99,18 +99,17 @@ static int lvmapi_test_shell(void *h)
 		      
 int main (int argc, char *argv[])
 {
-	void *h;
+	lvm_t libh;
 
-	h = lvm2_create();
-	if (!h) {
+	libh = lvm_create(NULL);
+	if (!libh) {
 		printf("Unable to open lvm library instance\n");
 		return 1;
 	}
 
-	lvmapi_test_shell(h);
+	lvmapi_test_shell(libh);
 
-	if (h)
-		lvm2_destroy(h);
+	lvm_destroy(libh);
 	return 0;
 }
 
-- 
1.6.1.3

[PATCH 3/3] New base files needed for liblvm with doxygen style descriptions.

[Dave Wysochanski]

On Thu, 2009-02-19 at 20:01 +0100, Thomas Woerner wrote:
> Added files lib/lvm.h and lib/lvm_base.c:
> New structure lvm (used as an alias to cmd_context), new type definition lvm_t
> for the lvm handle. Added functions lvm_create, lvm_destroy and
> lvm_reload_config using the new handle.
> 
> Modified test/api/test.c:
> Use new lvm.h header file and lvm_t handle.
> 
> Removed lib/lvm2.h
> 
> Signed-off-by: Thomas Woerner <twoerner@redhat.com>
> ---
>  lib/Makefile.in |    5 ++-
>  lib/lvm.h       |   57 +++++++++++++++++++++++++++++++++++++++++++++++++++++++
>  lib/lvm2.h      |   53 ---------------------------------------------------
>  test/api/test.c |   17 +++++++--------
>  4 files changed, 68 insertions(+), 64 deletions(-)
>  create mode 100644 lib/lvm.h
>  delete mode 100644 lib/lvm2.h
> 
> diff --git a/lib/Makefile.in b/lib/Makefile.in
> index 54092cd..47786a7 100644
> --- a/lib/Makefile.in
> +++ b/lib/Makefile.in
> @@ -1,6 +1,6 @@
>  #
>  # Copyright (C) 2001-2004 Sistina Software, Inc. All rights reserved.
> -# Copyright (C) 2004-2007 Red Hat, Inc. All rights reserved.
> +# Copyright (C) 2004-2009 Red Hat, Inc. All rights reserved.
>  #
>  # This file is part of LVM2.
>  #
> @@ -86,7 +86,8 @@ SOURCES =\
>  	report/report.c \
>  	striped/striped.c \
>  	uuid/uuid.c \
> -	zero/zero.c
> +	zero/zero.c \
> +	lvm_base.c
>  
>  ifeq ("@LVM1@", "internal")
>    SOURCES +=\
> diff --git a/lib/lvm.h b/lib/lvm.h
> new file mode 100644
> index 0000000..09ff680
> --- /dev/null
> +++ b/lib/lvm.h
> @@ -0,0 +1,57 @@
> +/*
> + * Copyright (C) 2008,2009 Red Hat, Inc. All rights reserved.
> + *
> + * This file is part of LVM2.
> + *
> + * This copyrighted material is made available to anyone wishing to use,
> + * modify, copy, or redistribute it subject to the terms and conditions
> + * of the GNU Lesser General Public License v.2.1.
> + *
> + * You should have received a copy of the GNU Lesser General Public License
> + * along with this program; if not, write to the Free Software Foundation,
> + * Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
> + */
> +#ifndef _LIB_LVM_H
> +#define _LIB_LVM_H
> +
> +#include "version.h"
> +
> +#include <stdint.h>
> +
> +struct lvm; /* internal data */
> +
> +/**
> + * The lvm handle.
> + */
> +typedef struct lvm *lvm_t;
> +
> +/**
> + * Create a LVM handle.
> + *
> + * \param   system_dir
> + *          Set an alternative system path or NULL for the default value. If
> + *          the environment variable LVM_SYSTEM_DIR is set, it will overwrite
> + *          this value.
> + * \return  A valid LVM handle is returned or NULL if there has been a
> + *          memory allocation problem. You have to check if an error occured
> + *          with the lvm_error function.
> + */
> +lvm_t lvm_create(const char *system_dir);
> +
> +/**
> + * Destroy a LVM handle allocated with lvm_create.
> + *
> + * \param   libh
> + *          Handle obtained from lvm_create.
> + */
> +void lvm_destroy(lvm_t libh);
> +
> +/**
> + * Reload the original configuration from the system directory.
> + *
> + * \param   libh
> + *          Handle obtained from lvm_create.
> + */
> +int lvm_reload_config(lvm_t libh);
> +
> +#endif /* _LIB_LVM_H */
> diff --git a/lib/lvm2.h b/lib/lvm2.h
> deleted file mode 100644
> index b18cead..0000000
> --- a/lib/lvm2.h
> +++ /dev/null
> @@ -1,53 +0,0 @@
> -/*
> - * Copyright (C) 2001-2004 Sistina Software, Inc. All rights reserved.  
> - * Copyright (C) 2004-2008 Red Hat, Inc. All rights reserved.
> - *
> - * This file is part of LVM2.
> - *
> - * This copyrighted material is made available to anyone wishing to use,
> - * modify, copy, or redistribute it subject to the terms and conditions
> - * of the GNU Lesser General Public License v.2.1.
> - *
> - * You should have received a copy of the GNU Lesser General Public License
> - * along with this program; if not, write to the Free Software Foundation,
> - * Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
> - */
> -#ifndef _LIB_LVM2_H
> -#define _LIB_LVM2_H
> -
> -#include <stdint.h>
> -
> -/*
> - * Library Initialisation
> - * FIXME: For now just #define lvm2_create() and lvm2_destroy() to 
> - * create_toolcontext() and destroy_toolcontext()
> - */
> -struct arg;
> -struct cmd_context;
> -struct cmd_context *create_toolcontext(unsigned is_long_lived);
> -void destroy_toolcontext(struct cmd_context *cmd);
> -
> -/*
> - * lvm2_create
> -lvm_handle_t lvm2_create(void);
> - *
> - * Description: Create an LVM2 handle used in many other APIs.
> - *
> - * Returns:
> - * NULL: Fail - unable to initialise handle.
> - * non-NULL: Success - valid LVM2 handle returned
> - */
> -#define lvm2_create(X) create_toolcontext(1)
> -
> -/*
> - * lvm2_destroy
> -void lvm2_destroy(lvm_handle_t h);
> - *
> - * Description: Destroy an LVM2 handle allocated with lvm2_create
> - *
> - * Parameters:
> - * - h (IN): handle obtained from lvm2_create
> - */
> -#define lvm2_destroy(X) destroy_toolcontext(X)
> -
> -#endif
> diff --git a/test/api/test.c b/test/api/test.c
> index de53c46..b742976 100644
> --- a/test/api/test.c
> +++ b/test/api/test.c
> @@ -1,6 +1,6 @@
>  /*
>   * Copyright (C) 2001-2004 Sistina Software, Inc. All rights reserved.  
> - * Copyright (C) 2004-2008 Red Hat, Inc. All rights reserved.
> + * Copyright (C) 2004-2009 Red Hat, Inc. All rights reserved.
>   *
>   * This file is part of LVM2.
>   *
> @@ -16,7 +16,7 @@
>  #include <string.h>
>  #include <stdlib.h>
>  #include <readline/readline.h>
> -#include "lvm2.h"
> +#include "lvm.h"
>  
>  #define MAX_ARGS 64
>  
> @@ -48,7 +48,7 @@ static int lvm_split(char *str, int *argc, char **argv, int max)
>  	return *argc;
>  }
>  
> -static int lvmapi_test_shell(void *h)
> +static int lvmapi_test_shell(lvm_t libh)
>  {
>  	int argc, i;
>  	char *input = NULL, *args[MAX_ARGS], **argv;
> @@ -99,18 +99,17 @@ static int lvmapi_test_shell(void *h)
>  		      
>  int main (int argc, char *argv[])
>  {
> -	void *h;
> +	lvm_t libh;
>  
> -	h = lvm2_create();
> -	if (!h) {
> +	libh = lvm_create(NULL);
> +	if (!libh) {
>  		printf("Unable to open lvm library instance\n");
>  		return 1;
>  	}
>  
> -	lvmapi_test_shell(h);
> +	lvmapi_test_shell(libh);
>  
> -	if (h)
> -		lvm2_destroy(h);
> +	lvm_destroy(libh);
>  	return 0;
>  }
>  

lvm_base.c missing - did you forget to 'git add'?

Ack the rest of the patch.

Latest liblvm base patches

[Thomas Woerner]

Here are the latest liblvm base patches.

[PATCH 1/3] New parameter system_dir for create_toolcontext.

[Thomas Woerner]

cmd->sys_dir, which defaults to DEFAULT_SYS_DIR, will be set to system_dir i
the parameter is not NULL. If the environment variable LVM_SYSTEM_DIR is set
it will overwrite any value of cmd->sys_dir.

Signed-off-by: Thomas Woerner <twoerner@redhat.com>
---
 daemons/clvmd/lvm-functions.c |    4 ++--
 lib/commands/toolcontext.c    |   16 ++++++++++++++--
 lib/commands/toolcontext.h    |    9 +++++++--
 tools/lvmcmdline.c            |    4 ++--
 4 files changed, 25 insertions(+), 8 deletions(-)

diff --git a/daemons/clvmd/lvm-functions.c b/daemons/clvmd/lvm-functions.c
index 5cf7eff..d720802 100644
--- a/daemons/clvmd/lvm-functions.c
+++ b/daemons/clvmd/lvm-functions.c
@@ -1,6 +1,6 @@
 /*
  * Copyright (C) 2002-2004 Sistina Software, Inc. All rights reserved.
- * Copyright (C) 2004-2008 Red Hat, Inc. All rights reserved.
+ * Copyright (C) 2004-2009 Red Hat, Inc. All rights reserved.
  *
  * This file is part of LVM2.
  *
@@ -724,7 +724,7 @@ void lvm_do_backup(const char *vgname)
 /* Called to initialise the LVM context of the daemon */
 int init_lvm(int using_gulm)
 {
-	if (!(cmd = create_toolcontext(1))) {
+	if (!(cmd = create_toolcontext(1, NULL))) {
 		log_error("Failed to allocate command context");
 		return 0;
 	}
diff --git a/lib/commands/toolcontext.c b/lib/commands/toolcontext.c
index 0a98325..39c644c 100644
--- a/lib/commands/toolcontext.c
+++ b/lib/commands/toolcontext.c
@@ -1,6 +1,6 @@
 /*
  * Copyright (C) 2001-2004 Sistina Software, Inc. All rights reserved.
- * Copyright (C) 2004-2007 Red Hat, Inc. All rights reserved.
+ * Copyright (C) 2004-2009 Red Hat, Inc. All rights reserved.
  *
  * This file is part of LVM2.
  *
@@ -998,7 +998,8 @@ static void _init_globals(struct cmd_context *cmd)
 }
 
 /* Entry point */
-struct cmd_context *create_toolcontext(unsigned is_long_lived)
+struct cmd_context *create_toolcontext(unsigned is_long_lived,
+				       const char *system_dir)
 {
 	struct cmd_context *cmd;
 
@@ -1030,6 +1031,17 @@ struct cmd_context *create_toolcontext(unsigned is_long_lived)
 
 	strcpy(cmd->sys_dir, DEFAULT_SYS_DIR);
 
+	/*
+	 * cmd->sys_dir, which defaults to DEFAULT_SYS_DIR, will be set to 
+	 * system_dir if the parameter is not NULL. If the environment 
+	 * variable LVM_SYSTEM_DIR is set, it will overwrite any value of 
+	 * cmd->sys_dir.
+	 */
+        if (system_dir) {
+		strncpy(cmd->sys_dir, system_dir, sizeof(cmd->sys_dir));
+		cmd->sys_dir[sizeof(cmd->sys_dir) - 1] = '\0';
+	}
+
 	if (!_get_env_vars(cmd))
 		goto error;
 
diff --git a/lib/commands/toolcontext.h b/lib/commands/toolcontext.h
index 7d2aef9..eb2b6ef 100644
--- a/lib/commands/toolcontext.h
+++ b/lib/commands/toolcontext.h
@@ -1,6 +1,6 @@
 /*
  * Copyright (C) 2001-2004 Sistina Software, Inc. All rights reserved.  
- * Copyright (C) 2004-2007 Red Hat, Inc. All rights reserved.
+ * Copyright (C) 2004-2009 Red Hat, Inc. All rights reserved.
  *
  * This file is part of LVM2.
  *
@@ -94,7 +94,12 @@ struct cmd_context {
 	char sysfs_dir[PATH_MAX];
 };
 
-struct cmd_context *create_toolcontext(unsigned is_long_lived);
+/*
+ * cmd->sys_dir, which defaults to DEFAULT_SYS_DIR, will be set to system_dir 
+ * if the parameter is not NULL. If the environment variable LVM_SYSTEM_DIR is 
+ * set, it will overwrite any value of cmd->sys_dir.
+ */
+struct cmd_context *create_toolcontext(unsigned is_long_lived, const char *system_dir);
 void destroy_toolcontext(struct cmd_context *cmd);
 int refresh_toolcontext(struct cmd_context *cmd);
 int config_files_changed(struct cmd_context *cmd);
diff --git a/tools/lvmcmdline.c b/tools/lvmcmdline.c
index 880f31e..cb1bfc6 100644
--- a/tools/lvmcmdline.c
+++ b/tools/lvmcmdline.c
@@ -1,6 +1,6 @@
 /*
  * Copyright (C) 2001-2004 Sistina Software, Inc. All rights reserved.
- * Copyright (C) 2004-2007 Red Hat, Inc. All rights reserved.
+ * Copyright (C) 2004-2009 Red Hat, Inc. All rights reserved.
  *
  * This file is part of LVM2.
  *
@@ -1158,7 +1158,7 @@ struct cmd_context *init_lvm(void)
 
 	_cmdline.the_args = &_the_args[0];
 
-	if (!(cmd = create_toolcontext(0)))
+	if (!(cmd = create_toolcontext(0, NULL)))
 		return_NULL;
 
 	return cmd;
-- 
1.6.1.3