diff options
Diffstat (limited to 'tools/lib/api/fs/tracefs.c')
| -rw-r--r-- | tools/lib/api/fs/tracefs.c | 78 | 
1 files changed, 0 insertions, 78 deletions
| diff --git a/tools/lib/api/fs/tracefs.c b/tools/lib/api/fs/tracefs.c deleted file mode 100644 index e4aa9688b71e..000000000000 --- a/tools/lib/api/fs/tracefs.c +++ /dev/null @@ -1,78 +0,0 @@ -#include <errno.h> -#include <stdio.h> -#include <stdlib.h> -#include <string.h> -#include <unistd.h> -#include <stdbool.h> -#include <sys/vfs.h> -#include <sys/types.h> -#include <sys/stat.h> -#include <sys/mount.h> -#include <linux/kernel.h> - -#include "tracefs.h" - -#ifndef TRACEFS_DEFAULT_PATH -#define TRACEFS_DEFAULT_PATH		"/sys/kernel/tracing" -#endif - -char tracefs_mountpoint[PATH_MAX + 1] = TRACEFS_DEFAULT_PATH; - -static const char * const tracefs_known_mountpoints[] = { -	TRACEFS_DEFAULT_PATH, -	"/sys/kernel/debug/tracing", -	"/tracing", -	"/trace", -	0, -}; - -static bool tracefs_found; - -bool tracefs_configured(void) -{ -	return tracefs_find_mountpoint() != NULL; -} - -/* find the path to the mounted tracefs */ -const char *tracefs_find_mountpoint(void) -{ -	const char *ret; - -	if (tracefs_found) -		return (const char *)tracefs_mountpoint; - -	ret = find_mountpoint("tracefs", (long) TRACEFS_MAGIC, -			      tracefs_mountpoint, PATH_MAX + 1, -			      tracefs_known_mountpoints); - -	if (ret) -		tracefs_found = true; - -	return ret; -} - -/* mount the tracefs somewhere if it's not mounted */ -char *tracefs_mount(const char *mountpoint) -{ -	/* see if it's already mounted */ -	if (tracefs_find_mountpoint()) -		goto out; - -	/* if not mounted and no argument */ -	if (mountpoint == NULL) { -		/* see if environment variable set */ -		mountpoint = getenv(PERF_TRACEFS_ENVIRONMENT); -		/* if no environment variable, use default */ -		if (mountpoint == NULL) -			mountpoint = TRACEFS_DEFAULT_PATH; -	} - -	if (mount(NULL, mountpoint, "tracefs", 0, NULL) < 0) -		return NULL; - -	/* save the mountpoint */ -	tracefs_found = true; -	strncpy(tracefs_mountpoint, mountpoint, sizeof(tracefs_mountpoint)); -out: -	return tracefs_mountpoint; -} |