From 558d815e5e68ca44accfca360cafdbcf0d4bb07d Mon Sep 17 00:00:00 2001
From: Ken Raeburn <raeburn@mit.edu>
Date: Fri, 9 Jun 2006 23:40:17 +0000
Subject: [PATCH] Call krb5_set_error_message any time multiple errno values
 are translated to one KRB5_RC_* error code, and a few other places.

git-svn-id: svn://anonsvn.mit.edu/krb5/trunk@18102 dc483132-0cff-0310-8789-dd5450dbe970
---
 src/lib/krb5/rcache/rc_io.c | 74 +++++++++++++++++++++++++++++--------
 1 file changed, 59 insertions(+), 15 deletions(-)

diff --git a/src/lib/krb5/rcache/rc_io.c b/src/lib/krb5/rcache/rc_io.c
index 52b57e44f..1189fb23b 100644
--- a/src/lib/krb5/rcache/rc_io.c
+++ b/src/lib/krb5/rcache/rc_io.c
@@ -139,11 +139,17 @@ krb5_rc_io_creat(krb5_context context, krb5_rc_iostuff *d, char **fn)
 	case EROFS:
 	case EEXIST:
 	    retval = KRB5_RC_IO_PERM;
+	    krb5_set_error_message(context, retval,
+				   "Cannot create replay cache: %s",
+				   strerror(errno));
 	    do_not_unlink = 1;
 	    goto cleanup;
 
 	default:
 	    retval = KRB5_RC_IO_UNKNOWN;
+	    krb5_set_error_message(context, retval,
+				   "Cannot create replay cache: %s",
+				   strerror(errno));
 	    goto cleanup;
 	}
     }
@@ -228,10 +234,16 @@ krb5_rc_io_open_internal(krb5_context context, krb5_rc_iostuff *d, char *fn,
 	case EACCES:
 	case EROFS:
 	    retval = KRB5_RC_IO_PERM;
+	    krb5_set_error_message (context, retval,
+				    "Cannot open replay cache %s: %s",
+				    d->fn, strerror(errno));
 	    goto cleanup;
 
 	default:
 	    retval = KRB5_RC_IO_UNKNOWN;
+	    krb5_set_error_message (context, retval,
+				    "Cannot open replay cache %s: %s",
+				    d->fn, strerror(errno));
 	    goto cleanup;
 	}
     }
@@ -348,14 +360,26 @@ krb5_rc_io_write(krb5_context context, krb5_rc_iostuff *d, krb5_pointer buf,
     if (write(d->fd, (char *) buf, num) == -1)
 	switch(errno)
 	{
-	case EBADF: return KRB5_RC_IO_UNKNOWN;
-	case EFBIG: return KRB5_RC_IO_SPACE;
 #ifdef EDQUOT
-	case EDQUOT: return KRB5_RC_IO_SPACE;
+	case EDQUOT:
 #endif
-	case ENOSPC: return KRB5_RC_IO_SPACE;
-	case EIO: return KRB5_RC_IO_IO;
-	default: return KRB5_RC_IO_UNKNOWN;
+	case EFBIG:
+	case ENOSPC:
+	    krb5_set_error_message (context, KRB5_RC_IO_SPACE,
+				    "Can't write to replay cache: %s",
+				    strerror(errno));
+	    return KRB5_RC_IO_SPACE;
+	case EIO:
+	    krb5_set_error_message (context, KRB5_RC_IO_IO,
+				    "Can't write to replay cache: %s",
+				    strerror(errno));
+	    return KRB5_RC_IO_IO;
+	case EBADF:
+	default:
+	    krb5_set_error_message (context, KRB5_RC_IO_UNKNOWN,
+				    "Can't write to replay cache: %s",
+				    strerror(errno));
+	    return KRB5_RC_IO_UNKNOWN;
 	}
     return 0;
 }
@@ -373,7 +397,11 @@ krb5_rc_io_sync(krb5_context context, krb5_rc_iostuff *d)
 	{
 	case EBADF: return KRB5_RC_IO_UNKNOWN;
 	case EIO: return KRB5_RC_IO_IO;
-	default: return KRB5_RC_IO_UNKNOWN;
+	default:
+	    krb5_set_error_message(context, KRB5_RC_IO_UNKNOWN,
+				   "Cannot sync replay cache file: %s",
+				   strerror(errno));
+	    return KRB5_RC_IO_UNKNOWN;
 	}
     }
     return 0;
@@ -387,9 +415,13 @@ krb5_rc_io_read(krb5_context context, krb5_rc_iostuff *d, krb5_pointer buf,
     if ((count = read(d->fd, (char *) buf, num)) == -1)
 	switch(errno)
 	{
-	case EBADF: return KRB5_RC_IO_UNKNOWN;
 	case EIO: return KRB5_RC_IO_IO;
-	default: return KRB5_RC_IO_UNKNOWN;
+	case EBADF:
+	default:
+	    krb5_set_error_message(context, KRB5_RC_IO_UNKNOWN,
+				   "Can't read from replay cache: %s",
+				   strerror(errno));
+	    return KRB5_RC_IO_UNKNOWN;
 	}
     if (count == 0)
 	return KRB5_RC_IO_EOF;
@@ -417,12 +449,24 @@ krb5_rc_io_destroy(krb5_context context, krb5_rc_iostuff *d)
     if (unlink(d->fn) == -1)
 	switch(errno)
 	{
-	case EBADF: return KRB5_RC_IO_UNKNOWN;
-	case EIO: return KRB5_RC_IO_IO;
-	case EPERM: return KRB5_RC_IO_PERM;
-	case EBUSY: return KRB5_RC_IO_PERM;
-	case EROFS: return KRB5_RC_IO_PERM;
-	default: return KRB5_RC_IO_UNKNOWN;
+	case EIO:
+	    krb5_set_error_message(context, KRB5_RC_IO_IO,
+				   "Can't destroy replay cache: %s",
+				   strerror(errno));
+	    return KRB5_RC_IO_IO;
+	case EPERM:
+	case EBUSY:
+	case EROFS:
+	    krb5_set_error_message(context, KRB5_RC_IO_PERM,
+				   "Can't destroy replay cache: %s",
+				   strerror(errno));
+	    return KRB5_RC_IO_PERM;
+	case EBADF:
+	default:
+	    krb5_set_error_message(context, KRB5_RC_IO_UNKNOWN,
+				   "Can't destroy replay cache: %s",
+				   strerror(errno));
+	    return KRB5_RC_IO_UNKNOWN;
 	}
     return 0;
 }
-- 
2.26.2