Libc-594.1.4.tar.gz

[apple/libc.git] / gen / confstr.c

diff --git a/gen/confstr.c b/gen/confstr.c
index 3165a09fd274005a7e446a749f8105866cb00709..419571be5df9026f729cbe1a7a120595daef946c 100644 (file)
--- a/gen/confstr.c
+++ b/gen/confstr.c
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 1999 Apple Computer, Inc. All rights reserved.
+ * Copyright (c) 1999, 2006 Apple Computer, Inc. All rights reserved.
  *
  * @APPLE_LICENSE_HEADER_START@
  * 
@@ -62,6 +62,17 @@
 #include <stdlib.h>
 #include <string.h>
 #include <unistd.h>
+#include <stdio.h>     /* for P_tmpdir */
+
+#include <dirhelper_priv.h>
+
+extern char *_dirhelper(dirhelper_which_t which, char *path, size_t pathlen);
+
+#if __DARWIN_UNIX03
+#define CONFSTR_ERR_RET        0
+#else /* !__DARWIN_UNIX03 */
+#define CONFSTR_ERR_RET        -1
+#endif /* __DARWIN_UNIX03 */
 
 size_t
 confstr(name, buf, len)
@@ -78,15 +89,15 @@ confstr(name, buf, len)
                mib[0] = CTL_USER;
                mib[1] = USER_CS_PATH;
                if (sysctl(mib, 2, NULL, &tlen, NULL, 0) == -1)
-                       return (-1);
+                       return (CONFSTR_ERR_RET);
                if (len != 0 && buf != NULL) {
                        if ((p = malloc(tlen)) == NULL)
-                               return (-1);
+                               return (CONFSTR_ERR_RET);
                        if (sysctl(mib, 2, p, &tlen, NULL, 0) == -1) {
                                sverrno = errno;
                                free(p);
                                errno = sverrno;
-                               return (-1);
+                               return (CONFSTR_ERR_RET);
                        }
                        /*
                         * POSIX 1003.2 requires partial return of
@@ -96,7 +107,7 @@ confstr(name, buf, len)
                        buf[len - 1] = '\0';
                        free(p);
                }
-               return (tlen + 1);
+               return (tlen);
 
        case _CS_POSIX_V6_ILP32_OFF32_CFLAGS:
        case _CS_XBS5_ILP32_OFF32_CFLAGS:               /* legacy */
@@ -156,6 +167,42 @@ docopy:
                        strlcpy(buf, p, len);
                return (strlen(p) + 1);
 
+       case _CS_DARWIN_USER_DIR:
+               if ((p = alloca(PATH_MAX)) == NULL) {
+                       errno = ENOMEM;
+                       return (CONFSTR_ERR_RET);
+               }
+               if (_dirhelper(DIRHELPER_USER_LOCAL, p, PATH_MAX) == NULL)
+                       return (CONFSTR_ERR_RET);
+               goto docopy;
+
+       case _CS_DARWIN_USER_TEMP_DIR:
+               if ((p = alloca(PATH_MAX)) == NULL) {
+                       errno = ENOMEM;
+                       return (CONFSTR_ERR_RET);
+               }
+               if (_dirhelper(DIRHELPER_USER_LOCAL_TEMP, p, PATH_MAX) == NULL) {
+                       /*
+                        * If _dirhelper() fails, try TMPDIR and P_tmpdir,
+                        * finally failing otherwise.
+                        */
+                       if ((p = getenv("TMPDIR")) && access(p, W_OK) == 0)
+                               goto docopy;
+                       if (access(p = P_tmpdir, W_OK) == 0)
+                               goto docopy;
+                       return (CONFSTR_ERR_RET);
+               }
+               goto docopy;
+
+       case _CS_DARWIN_USER_CACHE_DIR:
+               if ((p = alloca(PATH_MAX)) == NULL) {
+                       errno = ENOMEM;
+                       return (CONFSTR_ERR_RET);
+               }
+               if (_dirhelper(DIRHELPER_USER_LOCAL_CACHE, p, PATH_MAX) == NULL)
+                       return (CONFSTR_ERR_RET);
+               goto docopy;
+
        default:
                errno = EINVAL;
                return (0);