perror() is defined to fprintf(stderr,...).  HACKING says
fprintf(stderr,...) is wrong.  So perror() is too.

Signed-off-by: Ian Jackson <Ian.Jackson@eu.citrix.com>
CC: Paolo Bonzini <pbonzini@redhat.com>
CC: Markus Armbruster <armbru@redhat.com>
CC: Daniel P. Berrange <berrange@redhat.com>
CC: Michael Tokarev <mjt@tls.msk.ru>
CC: Alistair Francis <alistair.francis@xilinx.com>
Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
---
v7: New patch
---
 os-posix.c | 8 ++++----
 1 file changed, 4 insertions(+), 4 deletions(-)

diff --git a/os-posix.c b/os-posix.c
index a2ba50d..24eb700 100644
--- a/os-posix.c
+++ b/os-posix.c
@@ -125,7 +125,7 @@ void os_set_proc_name(const char *s)
     /* Could rewrite argv[0] too, but that's a bit more complicated.
        This simple way is enough for `top'. */
     if (prctl(PR_SET_NAME, name)) {
-        perror("unable to change process name");
+        error_report("unable to change process name: %s", strerror(errno));
         exit(1);
     }
 #else
@@ -247,7 +247,7 @@ static void change_root(void)
             exit(1);
         }
         if (chdir("/")) {
-            perror("not able to chdir to /");
+            error_report("not able to chdir to /: %s", strerror(errno));
             exit(1);
         }
     }
@@ -309,7 +309,7 @@ void os_setup_post(void)
 
     if (daemonize) {
         if (chdir("/")) {
-            perror("not able to chdir to /");
+            error_report("not able to chdir to /: %s", strerror(errno));
             exit(1);
         }
         TFR(fd = qemu_open("/dev/null", O_RDWR));
@@ -383,7 +383,7 @@ int os_mlock(void)
 
     ret = mlockall(MCL_CURRENT | MCL_FUTURE);
     if (ret < 0) {
-        perror("mlockall");
+        error_report("mlockall: %s", strerror(errno));
     }
 
     return ret;
-- 
2.1.4

On Tue, Apr 24, 2018 at 10:58 AM, Ian Jackson <ian.jackson@eu.citrix.com> wrote:
> perror() is defined to fprintf(stderr,...).  HACKING says
> fprintf(stderr,...) is wrong.  So perror() is too.
>
> Signed-off-by: Ian Jackson <Ian.Jackson@eu.citrix.com>
> CC: Paolo Bonzini <pbonzini@redhat.com>
> CC: Markus Armbruster <armbru@redhat.com>
> CC: Daniel P. Berrange <berrange@redhat.com>
> CC: Michael Tokarev <mjt@tls.msk.ru>
> CC: Alistair Francis <alistair.francis@xilinx.com>
> Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org>

Reviewed-by: Alistair Francis <alistair.francis@wdc.com>

Alistair

> ---
> v7: New patch
> ---
>  os-posix.c | 8 ++++----
>  1 file changed, 4 insertions(+), 4 deletions(-)
>
> diff --git a/os-posix.c b/os-posix.c
> index a2ba50d..24eb700 100644
> --- a/os-posix.c
> +++ b/os-posix.c
> @@ -125,7 +125,7 @@ void os_set_proc_name(const char *s)
>      /* Could rewrite argv[0] too, but that's a bit more complicated.
>         This simple way is enough for `top'. */
>      if (prctl(PR_SET_NAME, name)) {
> -        perror("unable to change process name");
> +        error_report("unable to change process name: %s", strerror(errno));
>          exit(1);
>      }
>  #else
> @@ -247,7 +247,7 @@ static void change_root(void)
>              exit(1);
>          }
>          if (chdir("/")) {
> -            perror("not able to chdir to /");
> +            error_report("not able to chdir to /: %s", strerror(errno));
>              exit(1);
>          }
>      }
> @@ -309,7 +309,7 @@ void os_setup_post(void)
>
>      if (daemonize) {
>          if (chdir("/")) {
> -            perror("not able to chdir to /");
> +            error_report("not able to chdir to /: %s", strerror(errno));
>              exit(1);
>          }
>          TFR(fd = qemu_open("/dev/null", O_RDWR));
> @@ -383,7 +383,7 @@ int os_mlock(void)
>
>      ret = mlockall(MCL_CURRENT | MCL_FUTURE);
>      if (ret < 0) {
> -        perror("mlockall");
> +        error_report("mlockall: %s", strerror(errno));
>      }
>
>      return ret;
> --
> 2.1.4
>
>
> _______________________________________________
> Xen-devel mailing list
> Xen-devel@lists.xenproject.org
> https://lists.xenproject.org/mailman/listinfo/xen-devel