2014-02-24 20:51:57

by Mateusz Guzik

[permalink] [raw]
Subject: [PATCH] nfsidmap: fix error reporting for nfs4_* family of functions

Errors were logged with xlog_err function relying on errno, but these
functions don't set it.

Fix the problem by introducing xlog_err_code which accepts error code.

Signed-off-by: Mateusz Guzik <[email protected]>
---
support/include/xlog.h | 1 +
support/nfs/xlog.c | 12 ++++++++++++
utils/nfsidmap/nfsidmap.c | 11 ++++++-----
3 files changed, 19 insertions(+), 5 deletions(-)

diff --git a/support/include/xlog.h b/support/include/xlog.h
index fd34ec2..ae34eb7 100644
--- a/support/include/xlog.h
+++ b/support/include/xlog.h
@@ -45,6 +45,7 @@ int xlog_enabled(int fac);
void xlog(int fac, const char *fmt, ...);
void xlog_warn(const char *fmt, ...);
void xlog_err(const char *fmt, ...);
+void xlog_err_code(int error, const char *fmt, ...);
void xlog_backend(int fac, const char *fmt, va_list args);

#endif /* XLOG_H */
diff --git a/support/nfs/xlog.c b/support/nfs/xlog.c
index 83d07e1..3759217 100644
--- a/support/nfs/xlog.c
+++ b/support/nfs/xlog.c
@@ -27,6 +27,7 @@
#include <stdio.h>
#include <stdarg.h>
#include <syslog.h>
+#include <errno.h>
#include "nfslib.h"

#undef VERBOSE_PRINTF
@@ -220,3 +221,14 @@ xlog_err(const char* fmt, ...)
xlog_backend(L_FATAL, fmt, args);
va_end(args);
}
+
+void
+xlog_err_code(int error, const char *fmt, ...)
+{
+ va_list args;
+
+ errno = -error;
+ va_start(args, fmt);
+ xlog_backend(L_FATAL, fmt, args);
+ va_end(args);
+}
diff --git a/utils/nfsidmap/nfsidmap.c b/utils/nfsidmap/nfsidmap.c
index e14543c..bf97714 100644
--- a/utils/nfsidmap/nfsidmap.c
+++ b/utils/nfsidmap/nfsidmap.c
@@ -54,7 +54,7 @@ int id_lookup(char *name_at_domain, key_serial_t key, int type)
sprintf(id, "%u", gid);
}
if (rc < 0)
- xlog_err("id_lookup: %s: failed: %m",
+ xlog_err_code(rc, "id_lookup: %s: failed: %m",
(type == USER ? "nfs4_owner_to_uid" : "nfs4_group_owner_to_gid"));

if (rc == 0) {
@@ -95,8 +95,9 @@ int name_lookup(char *id, key_serial_t key, int type)

rc = nfs4_get_default_domain(NULL, domain, NFS4_MAX_DOMAIN_LEN);
if (rc != 0) {
+ xlog_err_code(rc,
+ "name_lookup: nfs4_get_default_domain failed: %m");
rc = -1;
- xlog_err("name_lookup: nfs4_get_default_domain failed: %m");
goto out;
}

@@ -108,7 +109,7 @@ int name_lookup(char *id, key_serial_t key, int type)
rc = nfs4_gid_to_name(gid, domain, name, IDMAP_NAMESZ);
}
if (rc < 0)
- xlog_err("name_lookup: %s: failed: %m",
+ xlog_err_code(rc, "name_lookup: %s: failed: %m",
(type == USER ? "nfs4_uid_to_name" : "nfs4_gid_to_name"));

if (rc == 0) {
@@ -272,8 +273,8 @@ int main(int argc, char **argv)
}
}

- if (nfs4_init_name_mapping(PATH_IDMAPDCONF)) {
- xlog_err("Unable to create name to user id mappings.");
+ if (rc = nfs4_init_name_mapping(PATH_IDMAPDCONF)) {
+ xlog_err_code(rc, "Unable to create name to user id mappings.");
return 1;
}
if (!verbose)
--
1.8.3.1



2014-03-11 18:06:22

by Steve Dickson

[permalink] [raw]
Subject: Re: [PATCH] nfsidmap: fix error reporting for nfs4_* family of functions



On 02/24/2014 03:51 PM, Mateusz Guzik wrote:
> Errors were logged with xlog_err function relying on errno, but these
> functions don't set it.
>
> Fix the problem by introducing xlog_err_code which accepts error code.
>
> Signed-off-by: Mateusz Guzik <[email protected]>
Committed...

steved.

> ---
> support/include/xlog.h | 1 +
> support/nfs/xlog.c | 12 ++++++++++++
> utils/nfsidmap/nfsidmap.c | 11 ++++++-----
> 3 files changed, 19 insertions(+), 5 deletions(-)
>
> diff --git a/support/include/xlog.h b/support/include/xlog.h
> index fd34ec2..ae34eb7 100644
> --- a/support/include/xlog.h
> +++ b/support/include/xlog.h
> @@ -45,6 +45,7 @@ int xlog_enabled(int fac);
> void xlog(int fac, const char *fmt, ...);
> void xlog_warn(const char *fmt, ...);
> void xlog_err(const char *fmt, ...);
> +void xlog_err_code(int error, const char *fmt, ...);
> void xlog_backend(int fac, const char *fmt, va_list args);
>
> #endif /* XLOG_H */
> diff --git a/support/nfs/xlog.c b/support/nfs/xlog.c
> index 83d07e1..3759217 100644
> --- a/support/nfs/xlog.c
> +++ b/support/nfs/xlog.c
> @@ -27,6 +27,7 @@
> #include <stdio.h>
> #include <stdarg.h>
> #include <syslog.h>
> +#include <errno.h>
> #include "nfslib.h"
>
> #undef VERBOSE_PRINTF
> @@ -220,3 +221,14 @@ xlog_err(const char* fmt, ...)
> xlog_backend(L_FATAL, fmt, args);
> va_end(args);
> }
> +
> +void
> +xlog_err_code(int error, const char *fmt, ...)
> +{
> + va_list args;
> +
> + errno = -error;
> + va_start(args, fmt);
> + xlog_backend(L_FATAL, fmt, args);
> + va_end(args);
> +}
> diff --git a/utils/nfsidmap/nfsidmap.c b/utils/nfsidmap/nfsidmap.c
> index e14543c..bf97714 100644
> --- a/utils/nfsidmap/nfsidmap.c
> +++ b/utils/nfsidmap/nfsidmap.c
> @@ -54,7 +54,7 @@ int id_lookup(char *name_at_domain, key_serial_t key, int type)
> sprintf(id, "%u", gid);
> }
> if (rc < 0)
> - xlog_err("id_lookup: %s: failed: %m",
> + xlog_err_code(rc, "id_lookup: %s: failed: %m",
> (type == USER ? "nfs4_owner_to_uid" : "nfs4_group_owner_to_gid"));
>
> if (rc == 0) {
> @@ -95,8 +95,9 @@ int name_lookup(char *id, key_serial_t key, int type)
>
> rc = nfs4_get_default_domain(NULL, domain, NFS4_MAX_DOMAIN_LEN);
> if (rc != 0) {
> + xlog_err_code(rc,
> + "name_lookup: nfs4_get_default_domain failed: %m");
> rc = -1;
> - xlog_err("name_lookup: nfs4_get_default_domain failed: %m");
> goto out;
> }
>
> @@ -108,7 +109,7 @@ int name_lookup(char *id, key_serial_t key, int type)
> rc = nfs4_gid_to_name(gid, domain, name, IDMAP_NAMESZ);
> }
> if (rc < 0)
> - xlog_err("name_lookup: %s: failed: %m",
> + xlog_err_code(rc, "name_lookup: %s: failed: %m",
> (type == USER ? "nfs4_uid_to_name" : "nfs4_gid_to_name"));
>
> if (rc == 0) {
> @@ -272,8 +273,8 @@ int main(int argc, char **argv)
> }
> }
>
> - if (nfs4_init_name_mapping(PATH_IDMAPDCONF)) {
> - xlog_err("Unable to create name to user id mappings.");
> + if (rc = nfs4_init_name_mapping(PATH_IDMAPDCONF)) {
> + xlog_err_code(rc, "Unable to create name to user id mappings.");
> return 1;
> }
> if (!verbose)
>