diff options
Diffstat (limited to 'tools/lib/lk')
-rw-r--r-- | tools/lib/lk/Makefile | 38 | ||||
-rw-r--r-- | tools/lib/lk/debugfs.c | 100 | ||||
-rw-r--r-- | tools/lib/lk/debugfs.h | 29 |
3 files changed, 0 insertions, 167 deletions
diff --git a/tools/lib/lk/Makefile b/tools/lib/lk/Makefile deleted file mode 100644 index 3dba0a4aebbf..000000000000 --- a/tools/lib/lk/Makefile +++ /dev/null @@ -1,38 +0,0 @@ -include ../../scripts/Makefile.include - -CC = $(CROSS_COMPILE)gcc -AR = $(CROSS_COMPILE)ar - -# guard against environment variables -LIB_H= -LIB_OBJS= - -LIB_H += debugfs.h - -LIB_OBJS += $(OUTPUT)debugfs.o - -LIBFILE = liblk.a - -CFLAGS = -ggdb3 -Wall -Wextra -std=gnu99 -Werror -O6 -D_FORTIFY_SOURCE=2 $(EXTRA_WARNINGS) $(EXTRA_CFLAGS) -fPIC -EXTLIBS = -lelf -lpthread -lrt -lm -ALL_CFLAGS = $(CFLAGS) $(BASIC_CFLAGS) -D_LARGEFILE64_SOURCE -D_FILE_OFFSET_BITS=64 -ALL_LDFLAGS = $(LDFLAGS) - -RM = rm -f - -$(LIBFILE): $(LIB_OBJS) - $(QUIET_AR)$(RM) $@ && $(AR) rcs $(OUTPUT)$@ $(LIB_OBJS) - -$(LIB_OBJS): $(LIB_H) - -$(OUTPUT)%.o: %.c - $(QUIET_CC)$(CC) -o $@ -c $(ALL_CFLAGS) $< -$(OUTPUT)%.s: %.c - $(QUIET_CC)$(CC) -S $(ALL_CFLAGS) $< -$(OUTPUT)%.o: %.S - $(QUIET_CC)$(CC) -o $@ -c $(ALL_CFLAGS) $< - -clean: - $(RM) $(LIB_OBJS) $(LIBFILE) - -.PHONY: clean diff --git a/tools/lib/lk/debugfs.c b/tools/lib/lk/debugfs.c deleted file mode 100644 index 7c4347962353..000000000000 --- a/tools/lib/lk/debugfs.c +++ /dev/null @@ -1,100 +0,0 @@ -#include <errno.h> -#include <stdio.h> -#include <stdlib.h> -#include <string.h> -#include <stdbool.h> -#include <sys/vfs.h> -#include <sys/mount.h> -#include <linux/kernel.h> - -#include "debugfs.h" - -char debugfs_mountpoint[PATH_MAX + 1] = "/sys/kernel/debug"; - -static const char * const debugfs_known_mountpoints[] = { - "/sys/kernel/debug/", - "/debug/", - 0, -}; - -static bool debugfs_found; - -/* find the path to the mounted debugfs */ -const char *debugfs_find_mountpoint(void) -{ - const char * const *ptr; - char type[100]; - FILE *fp; - - if (debugfs_found) - return (const char *)debugfs_mountpoint; - - ptr = debugfs_known_mountpoints; - while (*ptr) { - if (debugfs_valid_mountpoint(*ptr) == 0) { - debugfs_found = true; - strcpy(debugfs_mountpoint, *ptr); - return debugfs_mountpoint; - } - ptr++; - } - - /* give up and parse /proc/mounts */ - fp = fopen("/proc/mounts", "r"); - if (fp == NULL) - return NULL; - - while (fscanf(fp, "%*s %" STR(PATH_MAX) "s %99s %*s %*d %*d\n", - debugfs_mountpoint, type) == 2) { - if (strcmp(type, "debugfs") == 0) - break; - } - fclose(fp); - - if (strcmp(type, "debugfs") != 0) - return NULL; - - debugfs_found = true; - - return debugfs_mountpoint; -} - -/* verify that a mountpoint is actually a debugfs instance */ - -int debugfs_valid_mountpoint(const char *debugfs) -{ - struct statfs st_fs; - - if (statfs(debugfs, &st_fs) < 0) - return -ENOENT; - else if (st_fs.f_type != (long) DEBUGFS_MAGIC) - return -ENOENT; - - return 0; -} - -/* mount the debugfs somewhere if it's not mounted */ -char *debugfs_mount(const char *mountpoint) -{ - /* see if it's already mounted */ - if (debugfs_find_mountpoint()) - goto out; - - /* if not mounted and no argument */ - if (mountpoint == NULL) { - /* see if environment variable set */ - mountpoint = getenv(PERF_DEBUGFS_ENVIRONMENT); - /* if no environment variable, use default */ - if (mountpoint == NULL) - mountpoint = "/sys/kernel/debug"; - } - - if (mount(NULL, mountpoint, "debugfs", 0, NULL) < 0) - return NULL; - - /* save the mountpoint */ - debugfs_found = true; - strncpy(debugfs_mountpoint, mountpoint, sizeof(debugfs_mountpoint)); -out: - return debugfs_mountpoint; -} diff --git a/tools/lib/lk/debugfs.h b/tools/lib/lk/debugfs.h deleted file mode 100644 index 935c59bdb442..000000000000 --- a/tools/lib/lk/debugfs.h +++ /dev/null @@ -1,29 +0,0 @@ -#ifndef __LK_DEBUGFS_H__ -#define __LK_DEBUGFS_H__ - -#define _STR(x) #x -#define STR(x) _STR(x) - -/* - * On most systems <limits.h> would have given us this, but not on some systems - * (e.g. GNU/Hurd). - */ -#ifndef PATH_MAX -#define PATH_MAX 4096 -#endif - -#ifndef DEBUGFS_MAGIC -#define DEBUGFS_MAGIC 0x64626720 -#endif - -#ifndef PERF_DEBUGFS_ENVIRONMENT -#define PERF_DEBUGFS_ENVIRONMENT "PERF_DEBUGFS_DIR" -#endif - -const char *debugfs_find_mountpoint(void); -int debugfs_valid_mountpoint(const char *debugfs); -char *debugfs_mount(const char *mountpoint); - -extern char debugfs_mountpoint[]; - -#endif /* __LK_DEBUGFS_H__ */ |