X-Git-Url: https://git.whamcloud.com/?p=fs%2Flustre-release.git;a=blobdiff_plain;f=lustre%2Futils%2Flustre_cfg.c;h=b409656779e9b66fed8739c709160017cb39fd3d;hp=9079242a75ca138c9412b0a9632f67aa9f8955d7;hb=5ad45a6b28a1a4da6f22a508c0a5029c4db5e4b5;hpb=23b26e90a343ecff14c67dea1bafb65e23473cd6;ds=sidebyside

diff --git a/lustre/utils/lustre_cfg.c b/lustre/utils/lustre_cfg.c
index 9079242..b409656 100644
--- a/lustre/utils/lustre_cfg.c
+++ b/lustre/utils/lustre_cfg.c
@@ -1,6 +1,4 @@
-/* -*- mode: c; c-basic-offset: 8; indent-tabs-mode: nil; -*-
- * vim:expandtab:shiftwidth=8:tabstop=8:
- *
+/*
  * GPL HEADER START
  *
  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
@@ -26,8 +24,10 @@
  * GPL HEADER END
  */
 /*
- * Copyright  2008 Sun Microsystems, Inc. All rights reserved
+ * Copyright (c) 2003, 2010, Oracle and/or its affiliates. All rights reserved.
  * Use is subject to license terms.
+ *
+ * Copyright (c) 2011, 2012, Whamcloud, Inc.
  */
 /*
  * This file is part of Lustre, http://www.lustre.org/
@@ -77,13 +77,26 @@ static char * lcfg_devname;
 
 int lcfg_set_devname(char *name)
 {
+        char *ptr;
+        int digit = 1;
+
         if (name) {
                 if (lcfg_devname)
                         free(lcfg_devname);
                 /* quietly strip the unnecessary '$' */
                 if (*name == '$' || *name == '%')
                         name++;
-                if (isdigit(*name)) {
+
+                ptr = name;
+                while (*ptr != '\0') {
+                        if (!isdigit(*ptr)) {
+                            digit = 0;
+                            break;
+                        }
+                        ptr++;
+                }
+
+                if (digit) {
                         /* We can't translate from dev # to name */
                         lcfg_devname = NULL;
                 } else {
@@ -646,6 +659,30 @@ static void clean_path(char *path)
         }
 }
 
+/* Supporting file paths creates perilous behavoir: LU-888.
+ * Path support is deprecated.
+ * If a path is supplied it must begin with /proc.  */
+static void lprocfs_param_pattern(const char *cmd, const char *path, char *buf,
+        size_t buf_size)
+{
+        /* test path to see if it begins with '/proc/' */
+        if (strncmp(path, "/proc/", strlen("/proc/")) == 0) {
+                static int warned;
+                if (!warned) {
+                        fprintf(stderr, "%s: specifying parameters via "
+                                "full paths is deprecated.\n", cmd);
+#if LUSTRE_VERSION_CODE >= OBD_OCD_VERSION(2,6,50,0)
+#warning "remove deprecated full path tunable access"
+#endif
+                        warned = 1;
+                }
+                snprintf(buf, buf_size, "%s", path);
+        } else {
+                snprintf(buf, buf_size, "/proc/{fs,sys}/{lnet,lustre}/%s",
+                        path);
+        }
+}
+
 struct param_opts {
         int only_path:1;
         int show_path:1;
@@ -722,7 +759,6 @@ static int listparam_display(struct param_opts *popt, char *pattern)
 
 int jt_lcfg_listparam(int argc, char **argv)
 {
-        int fp;
         int rc = 0, i;
         struct param_opts popt;
         char pattern[PATH_MAX];
@@ -741,15 +777,7 @@ int jt_lcfg_listparam(int argc, char **argv)
 
                 clean_path(path);
 
-                /* If the entire path is specified as input */
-                fp = open(path, O_RDONLY);
-                if (fp < 0) {
-                        snprintf(pattern, PATH_MAX, "/proc/{fs,sys}/{lnet,lustre}/%s",
-                                 path);
-                } else {
-                        strcpy(pattern, path);
-                        close(fp);
-                }
+                lprocfs_param_pattern(argv[0], path, pattern, sizeof(pattern));
 
                 rc = listparam_display(&popt, pattern);
                 if (rc < 0)
@@ -863,7 +891,6 @@ static int getparam_display(struct param_opts *popt, char *pattern)
 
 int jt_lcfg_getparam(int argc, char **argv)
 {
-        int fp;
         int rc = 0, i;
         struct param_opts popt;
         char pattern[PATH_MAX];
@@ -873,30 +900,24 @@ int jt_lcfg_getparam(int argc, char **argv)
         if (rc < 0 || rc >= argc)
                 return CMD_HELP;
 
-        for (i = rc; i < argc; i++) {
-                path = argv[i];
+	for (i = rc, rc = 0; i < argc; i++) {
+		int rc2;
 
-                clean_path(path);
+		path = argv[i];
 
-                /* If the entire path is specified as input */
-                fp = open(path, O_RDONLY);
-                if (fp < 0) {
-                        snprintf(pattern, PATH_MAX, "/proc/{fs,sys}/{lnet,lustre}/%s",
-                                 path);
-                } else {
-                        strcpy(pattern, path);
-                        close(fp);
-                }
+		clean_path(path);
 
-                if (popt.only_path)
-                        rc = listparam_display(&popt, pattern);
-                else
-                        rc = getparam_display(&popt, pattern);
-                if (rc < 0)
-                        return rc;
-        }
+		lprocfs_param_pattern(argv[0], path, pattern, sizeof(pattern));
 
-        return 0;
+		if (popt.only_path)
+			rc2 = listparam_display(&popt, pattern);
+		else
+			rc2 = getparam_display(&popt, pattern);
+		if (rc2 < 0 && rc == 0)
+			rc = rc2;
+	}
+
+	return rc;
 }
 
 static int setparam_cmdline(int argc, char **argv, struct param_opts *popt)
@@ -966,7 +987,6 @@ static int setparam_display(struct param_opts *popt, char *pattern, char *value)
 
 int jt_lcfg_setparam(int argc, char **argv)
 {
-        int fp;
         int rc = 0, i;
         struct param_opts popt;
         char pattern[PATH_MAX];
@@ -976,7 +996,9 @@ int jt_lcfg_setparam(int argc, char **argv)
         if (rc < 0 || rc >= argc)
                 return CMD_HELP;
 
-        for (i = rc; i < argc; i++) {
+	for (i = rc, rc = 0; i < argc; i++) {
+		int rc2;
+
                 if ((value = strchr(argv[i], '=')) != NULL) {
                         /* format: set_param a=b */
                         *value = '\0';
@@ -994,22 +1016,15 @@ int jt_lcfg_setparam(int argc, char **argv)
 
                 clean_path(path);
 
-                /* If the entire path is specified as input */
-                fp = open(path, O_RDONLY);
-                if (fp < 0) {
-                        snprintf(pattern, PATH_MAX, "/proc/{fs,sys}/{lnet,lustre}/%s",
-                                 path);
-                } else {
-                        strcpy(pattern, path);
-                        close(fp);
-                }
+                lprocfs_param_pattern(argv[0], path, pattern, sizeof(pattern));
 
-                rc = setparam_display(&popt, pattern, value);
+                rc2 = setparam_display(&popt, pattern, value);
                 path = NULL;
                 value = NULL;
-                if (rc < 0)
-                        return rc;
-        }
+		if (rc2 < 0 && rc == 0)
+			rc = rc2;
+	}
 
-        return 0;
+	return rc;
 }
+