Re: [Intel-gfx] [i-g-t PATCH 3/4] lib/igt_debugfs: Add helper to return path to device.

[Petri Latvala]

On Thu, Apr 20, 2017 at 11:13:47AM +0300, Abdiel Janulgue wrote:
> Signed-off-by: Abdiel Janulgue 
> ---
>  lib/igt_debugfs.c | 26 ++
>  lib/igt_debugfs.h |  1 +
>  2 files changed, 27 insertions(+)
> 
> diff --git a/lib/igt_debugfs.c b/lib/igt_debugfs.c
> index 7584be5..b019c3b 100644
> --- a/lib/igt_debugfs.c
> +++ b/lib/igt_debugfs.c
> @@ -22,6 +22,9 @@
>   *
>   */
>  
> +#ifndef ANDROID
> +#define _GNU_SOURCE
> +#endif
>  #include 
>  #include 
>  #include 
> @@ -198,6 +201,29 @@ int igt_debugfs_dir(int device)
>   igt_debug("Opening debugfs directory '%s'\n", path);
>   return open(path, O_RDONLY);
>  }
> +\
> +/**
> + * igt_debugfs_path:
> + * @device: fd of the device
> + *
> + * Returns:
> + * The path to the debugfs directory corresponding to device
> + */
> +const char *igt_debugfs_path(int device)
> +{





> + char *path = 0;
> +
> + if (!path) {


??




--
Petri Latvala





> + char *linkname;
> + int debugfs;
> + igt_assert((debugfs = igt_debugfs_dir(device)) != -1);
> + igt_assert(path = calloc(PATH_MAX, sizeof(char)));
> + igt_assert(asprintf(, "/proc/self/fd/%d", debugfs) != 
> -1);
> + igt_assert(readlink(linkname, path, PATH_MAX * sizeof(char)) != 
> -1);
> + }
> +
> + return path;
> +}
>  
>  /**
>   * igt_debugfs_open:
> diff --git a/lib/igt_debugfs.h b/lib/igt_debugfs.h
> index 7b846a8..76cf409 100644
> --- a/lib/igt_debugfs.h
> +++ b/lib/igt_debugfs.h
> @@ -204,5 +204,6 @@ void igt_enable_prefault(void);
>   */
>  int igt_get_stable_obj_count(int driver);
>  void igt_debugfs_dump(int device, const char *filename);
> +const char *igt_debugfs_path(int device);
>  
>  #endif /* __IGT_DEBUGFS_H__ */
> -- 
> 2.7.4
> 
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[Intel-gfx] [i-g-t PATCH 3/4] lib/igt_debugfs: Add helper to return path to device.

[Abdiel Janulgue]

Signed-off-by: Abdiel Janulgue 
---
 lib/igt_debugfs.c | 26 ++
 lib/igt_debugfs.h |  1 +
 2 files changed, 27 insertions(+)

diff --git a/lib/igt_debugfs.c b/lib/igt_debugfs.c
index 7584be5..b019c3b 100644
--- a/lib/igt_debugfs.c
+++ b/lib/igt_debugfs.c
@@ -22,6 +22,9 @@
  *
  */
 
+#ifndef ANDROID
+#define _GNU_SOURCE
+#endif
 #include 
 #include 
 #include 
@@ -198,6 +201,29 @@ int igt_debugfs_dir(int device)
igt_debug("Opening debugfs directory '%s'\n", path);
return open(path, O_RDONLY);
 }
+\
+/**
+ * igt_debugfs_path:
+ * @device: fd of the device
+ *
+ * Returns:
+ * The path to the debugfs directory corresponding to device
+ */
+const char *igt_debugfs_path(int device)
+{
+   char *path = 0;
+
+   if (!path) {
+   char *linkname;
+   int debugfs;
+   igt_assert((debugfs = igt_debugfs_dir(device)) != -1);
+   igt_assert(path = calloc(PATH_MAX, sizeof(char)));
+   igt_assert(asprintf(, "/proc/self/fd/%d", debugfs) != 
-1);
+   igt_assert(readlink(linkname, path, PATH_MAX * sizeof(char)) != 
-1);
+   }
+
+   return path;
+}
 
 /**
  * igt_debugfs_open:
diff --git a/lib/igt_debugfs.h b/lib/igt_debugfs.h
index 7b846a8..76cf409 100644
--- a/lib/igt_debugfs.h
+++ b/lib/igt_debugfs.h
@@ -204,5 +204,6 @@ void igt_enable_prefault(void);
  */
 int igt_get_stable_obj_count(int driver);
 void igt_debugfs_dump(int device, const char *filename);
+const char *igt_debugfs_path(int device);
 
 #endif /* __IGT_DEBUGFS_H__ */
-- 
2.7.4

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