[Mesa-dev] [PATCH v2 1/3] xmlconfig: read more config files from drirc.d/

Qiang Yu Qiang.Yu at amd.com
Fri Aug 3 08:19:30 UTC 2018


v2:
  drop /etc/drirc.d

Driver and application can put their drirc files in
${datadir}/drirc.d/ with name xxx.conf. Config files
will be read and applied in file name alphabete order.

So there are three places for drirc listed in order:
1. /usr/share/drirc.d/
2. /etc/drirc
3. ~/.drirc

Signed-off-by: Qiang Yu <Qiang.Yu at amd.com>
---
 docs/autoconf.html   |   7 ++++
 src/util/Makefile.am |   1 +
 src/util/meson.build |   4 +-
 src/util/xmlconfig.c | 103 ++++++++++++++++++++++++++++++++++-----------------
 4 files changed, 80 insertions(+), 35 deletions(-)

diff --git a/docs/autoconf.html b/docs/autoconf.html
index df243c2..0dd8a7b 100644
--- a/docs/autoconf.html
+++ b/docs/autoconf.html
@@ -94,6 +94,13 @@ Currently there's only one config file provided when dri drivers are
 enabled - it's <code>drirc</code>.</p>
 </dd>
 
+<dt><code>--datadir=DIR</code></dt>
+<dd><p>This option specifies the directory where the data files will
+be installed. The default is <code>${prefix}/share</code>.
+Currently when dri drivers are enabled, <code>drirc.d/</code> is at
+this place.</p>
+</dd>
+
 <dt><code>--enable-static, --disable-shared</code></dt>
 <dd><p>By default, Mesa
 will build shared libraries. Either of these options will force static
diff --git a/src/util/Makefile.am b/src/util/Makefile.am
index bafb574..8d8c156 100644
--- a/src/util/Makefile.am
+++ b/src/util/Makefile.am
@@ -67,6 +67,7 @@ libxmlconfig_la_CFLAGS = \
 	-I$(top_srcdir)/include \
 	-I$(top_srcdir)/src \
 	-DSYSCONFDIR=\"$(sysconfdir)\" \
+	-DDATADIR=\"$(datadir)\" \
 	$(VISIBILITY_CFLAGS) \
 	$(EXPAT_CFLAGS)
 libxmlconfig_la_LIBADD = $(EXPAT_LIBS) -lm
diff --git a/src/util/meson.build b/src/util/meson.build
index 8c91be8..108524b 100644
--- a/src/util/meson.build
+++ b/src/util/meson.build
@@ -121,7 +121,9 @@ libxmlconfig = static_library(
   c_args : [
     c_msvc_compat_args, c_vis_args,
     '-DSYSCONFDIR="@0@"'.format(
-      join_paths(get_option('prefix'), get_option('sysconfdir'))
+      join_paths(get_option('prefix'), get_option('sysconfdir')),
+    '-DDATADIR="@0@"'.format(
+      join_paths(get_option('prefix'), get_option('datadir'))
     ),
   ],
   build_by_default : false,
diff --git a/src/util/xmlconfig.c b/src/util/xmlconfig.c
index d384791..120c6cf 100644
--- a/src/util/xmlconfig.c
+++ b/src/util/xmlconfig.c
@@ -36,6 +36,8 @@
 #include <math.h>
 #include <unistd.h>
 #include <errno.h>
+#include <dirent.h>
+#include <fnmatch.h>
 #include "xmlconfig.h"
 #include "process.h"
 
@@ -866,9 +868,8 @@ initOptionCache(driOptionCache *cache, const driOptionCache *info)
     }
 }
 
-/** \brief Parse the named configuration file */
 static void
-parseOneConfigFile(XML_Parser p)
+_parseOneConfigFile(XML_Parser p)
 {
 #define BUF_SIZE 0x1000
     struct OptConfData *data = (struct OptConfData *)XML_GetUserData (p);
@@ -907,17 +908,75 @@ parseOneConfigFile(XML_Parser p)
 #undef BUF_SIZE
 }
 
+/** \brief Parse the named configuration file */
+static void
+parseOneConfigFile(struct OptConfData *data, const char *filename)
+{
+    XML_Parser p;
+
+    p = XML_ParserCreate (NULL); /* use encoding specified by file */
+    XML_SetElementHandler (p, optConfStartElem, optConfEndElem);
+    XML_SetUserData (p, data);
+    data->parser = p;
+    data->name = filename;
+    data->ignoringDevice = 0;
+    data->ignoringApp = 0;
+    data->inDriConf = 0;
+    data->inDevice = 0;
+    data->inApp = 0;
+    data->inOption = 0;
+
+    _parseOneConfigFile (p);
+    XML_ParserFree (p);
+}
+
+static int
+scandir_filter(const struct dirent *ent)
+{
+    if (ent->d_type != DT_REG && ent->d_type != DT_LNK)
+       return 0;
+
+    if (fnmatch("*.conf", ent->d_name, 0))
+       return 0;
+
+    return 1;
+}
+
+/** \brief Parse configuration files in a directory */
+static void
+parseConfigDir(struct OptConfData *data, const char *dirname)
+{
+    int i, count;
+    struct dirent **entries = NULL;
+
+    count = scandir(dirname, &entries, scandir_filter, alphasort);
+    if (count < 0)
+        return;
+
+    for (i = 0; i < count; i++) {
+        char filename[PATH_MAX];
+
+        snprintf(filename, PATH_MAX, "%s/%s", dirname, entries[i]->d_name);
+        parseOneConfigFile(data, filename);
+    }
+
+    if (entries)
+        free(entries);
+}
+
 #ifndef SYSCONFDIR
 #define SYSCONFDIR "/etc"
 #endif
 
+#ifndef DATADIR
+#define DATADIR "/usr/share"
+#endif
+
 void
 driParseConfigFiles(driOptionCache *cache, const driOptionCache *info,
                     int screenNum, const char *driverName)
 {
-    char *filenames[2] = { SYSCONFDIR "/drirc", NULL};
     char *home;
-    uint32_t i;
     struct OptConfData userData;
 
     initOptionCache (cache, info);
@@ -927,39 +986,15 @@ driParseConfigFiles(driOptionCache *cache, const driOptionCache *info,
     userData.driverName = driverName;
     userData.execName = util_get_process_name();
 
+    parseConfigDir(&userData, DATADIR "/drirc.d");
+    parseOneConfigFile(&userData, SYSCONFDIR "/drirc");
+
     if ((home = getenv ("HOME"))) {
-        uint32_t len = strlen (home);
-        filenames[1] = malloc(len + 7+1);
-        if (filenames[1] == NULL)
-            __driUtilMessage ("Can't allocate memory for %s/.drirc.", home);
-        else {
-            memcpy (filenames[1], home, len);
-            memcpy (filenames[1] + len, "/.drirc", 7+1);
-        }
-    }
+        char filename[PATH_MAX];
 
-    for (i = 0; i < 2; ++i) {
-        XML_Parser p;
-        if (filenames[i] == NULL)
-            continue;
-
-        p = XML_ParserCreate (NULL); /* use encoding specified by file */
-        XML_SetElementHandler (p, optConfStartElem, optConfEndElem);
-        XML_SetUserData (p, &userData);
-        userData.parser = p;
-        userData.name = filenames[i];
-        userData.ignoringDevice = 0;
-        userData.ignoringApp = 0;
-        userData.inDriConf = 0;
-        userData.inDevice = 0;
-        userData.inApp = 0;
-        userData.inOption = 0;
-
-        parseOneConfigFile (p);
-        XML_ParserFree (p);
+        snprintf(filename, PATH_MAX, "%s/.drirc", home);
+        parseOneConfigFile(&userData, filename);
     }
-
-    free(filenames[1]);
 }
 
 void
-- 
2.7.4



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