[PATCH v2 18/28] bsd-user: Implement getpriority(2) and setpriority(2).

Karim Taha posted 28 patches 1 year, 1 month ago
Maintainers: Warner Losh <imp@bsdimp.com>, Kyle Evans <kevans@freebsd.org>
There is a newer version of this series
[PATCH v2 18/28] bsd-user: Implement getpriority(2) and setpriority(2).
Posted by Karim Taha 1 year, 1 month ago
From: Stacey Son <sson@FreeBSD.org>

Signed-off-by: Stacey Son <sson@FreeBSD.org>
Signed-off-by: Karim Taha <kariem.taha2.7@gmail.com>
---
 bsd-user/bsd-proc.h           | 24 ++++++++++++++++++++++++
 bsd-user/freebsd/os-syscall.c |  8 ++++++++
 2 files changed, 32 insertions(+)

diff --git a/bsd-user/bsd-proc.h b/bsd-user/bsd-proc.h
index fff1d4cded..89792d26c6 100644
--- a/bsd-user/bsd-proc.h
+++ b/bsd-user/bsd-proc.h
@@ -390,4 +390,28 @@ static inline abi_long do_bsd_ptrace(abi_long arg1, abi_long arg2,
     return -TARGET_ENOSYS;
 }
 
+/* getpriority(2) */
+static inline abi_long do_bsd_getpriority(abi_long which, abi_long who)
+{
+    abi_long ret;
+    /*
+     * Note that negative values are valid for getpriority, so we must
+     * differentiate based on errno settings.
+     */
+    errno = 0;
+    ret = getpriority(which, who);
+    if (ret == -1 && errno != 0) {
+        return -host_to_target_errno(errno);
+    }
+
+    return ret;
+}
+
+/* setpriority(2) */
+static inline abi_long do_bsd_setpriority(abi_long which, abi_long who,
+                                          abi_long prio)
+{
+    return get_errno(setpriority(which, who, prio));
+}
+
 #endif /* !BSD_PROC_H_ */
diff --git a/bsd-user/freebsd/os-syscall.c b/bsd-user/freebsd/os-syscall.c
index 1a760b1380..71a2657dd0 100644
--- a/bsd-user/freebsd/os-syscall.c
+++ b/bsd-user/freebsd/os-syscall.c
@@ -359,6 +359,14 @@ static abi_long freebsd_syscall(void *cpu_env, int num, abi_long arg1,
         ret = do_bsd_ptrace(arg1, arg2, arg3, arg4);
         break;
 
+    case TARGET_FREEBSD_NR_getpriority: /* getpriority(2) */
+        ret = do_bsd_getpriority(arg1, arg2);
+        break;
+
+    case TARGET_FREEBSD_NR_setpriority: /* setpriority(2) */
+        ret = do_bsd_setpriority(arg1, arg2, arg3);
+        break;
+
 
         /*
          * File system calls.
-- 
2.42.0
Re: [PATCH v2 18/28] bsd-user: Implement getpriority(2) and setpriority(2).
Posted by Warner Losh 1 year, 1 month ago
On Sun, Sep 17, 2023 at 10:39 PM Karim Taha <kariem.taha2.7@gmail.com>
wrote:

> From: Stacey Son <sson@FreeBSD.org>
>
> Signed-off-by: Stacey Son <sson@FreeBSD.org>
> Signed-off-by: Karim Taha <kariem.taha2.7@gmail.com>
> ---
>  bsd-user/bsd-proc.h           | 24 ++++++++++++++++++++++++
>  bsd-user/freebsd/os-syscall.c |  8 ++++++++
>  2 files changed, 32 insertions(+)
>

Reviewed-by: Warner Losh <imp@bsdimp.com>

Looks right to my eye.  Let's see if Richard catches anything.



> diff --git a/bsd-user/bsd-proc.h b/bsd-user/bsd-proc.h
> index fff1d4cded..89792d26c6 100644
> --- a/bsd-user/bsd-proc.h
> +++ b/bsd-user/bsd-proc.h
> @@ -390,4 +390,28 @@ static inline abi_long do_bsd_ptrace(abi_long arg1,
> abi_long arg2,
>      return -TARGET_ENOSYS;
>  }
>
> +/* getpriority(2) */
> +static inline abi_long do_bsd_getpriority(abi_long which, abi_long who)
> +{
> +    abi_long ret;
> +    /*
> +     * Note that negative values are valid for getpriority, so we must
> +     * differentiate based on errno settings.
> +     */
> +    errno = 0;
> +    ret = getpriority(which, who);
> +    if (ret == -1 && errno != 0) {
> +        return -host_to_target_errno(errno);
> +    }
> +
> +    return ret;
> +}
> +
> +/* setpriority(2) */
> +static inline abi_long do_bsd_setpriority(abi_long which, abi_long who,
> +                                          abi_long prio)
> +{
> +    return get_errno(setpriority(which, who, prio));
> +}
> +
>  #endif /* !BSD_PROC_H_ */
> diff --git a/bsd-user/freebsd/os-syscall.c b/bsd-user/freebsd/os-syscall.c
> index 1a760b1380..71a2657dd0 100644
> --- a/bsd-user/freebsd/os-syscall.c
> +++ b/bsd-user/freebsd/os-syscall.c
> @@ -359,6 +359,14 @@ static abi_long freebsd_syscall(void *cpu_env, int
> num, abi_long arg1,
>          ret = do_bsd_ptrace(arg1, arg2, arg3, arg4);
>          break;
>
> +    case TARGET_FREEBSD_NR_getpriority: /* getpriority(2) */
> +        ret = do_bsd_getpriority(arg1, arg2);
> +        break;
> +
> +    case TARGET_FREEBSD_NR_setpriority: /* setpriority(2) */
> +        ret = do_bsd_setpriority(arg1, arg2, arg3);
> +        break;
> +
>
>          /*
>           * File system calls.
> --
> 2.42.0
>
>