tools lib api fs: Remove debugfs, tracefs and findfs objects
We have all the functionality in fs.c, let's remove unneeded objects. Signed-off-by: Jiri Olsa <jolsa@kernel.org> Cc: David Ahern <dsahern@gmail.com> Cc: Matt Fleming <matt@codeblueprint.co.uk> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Peter Zijlstra <a.p.zijlstra@chello.nl> Cc: Raphael Beamonte <raphael.beamonte@gmail.com> Cc: Steven Rostedt <rostedt@goodmis.org> Link: http://lkml.kernel.org/r/1441180605-24737-15-git-send-email-jolsa@kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
This commit is contained in:
Jiri Olsa
Arnaldo Carvalho de Melo
parent
4605eab348
commit
60a1133a5b
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@ -1,5 +1,2 @@
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libapi-y += fs.o
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libapi-y += tracing_path.o
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libapi-y += debugfs.o
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libapi-y += findfs.o
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libapi-y += tracefs.o
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@ -1,77 +0,0 @@
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#define _GNU_SOURCE
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#include <errno.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include <unistd.h>
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#include <stdbool.h>
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#include <sys/vfs.h>
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#include <sys/types.h>
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#include <sys/stat.h>
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#include <sys/mount.h>
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#include <linux/kernel.h>
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#include "debugfs.h"
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#include "tracefs.h"
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#ifndef DEBUGFS_DEFAULT_PATH
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#define DEBUGFS_DEFAULT_PATH "/sys/kernel/debug"
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#endif
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char debugfs_mountpoint[PATH_MAX + 1] = DEBUGFS_DEFAULT_PATH;
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static const char * const debugfs_known_mountpoints[] = {
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DEBUGFS_DEFAULT_PATH,
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"/debug",
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0,
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};
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static bool debugfs_found;
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bool debugfs_configured(void)
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{
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return debugfs_find_mountpoint() != NULL;
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}
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/* find the path to the mounted debugfs */
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const char *debugfs_find_mountpoint(void)
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{
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const char *ret;
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if (debugfs_found)
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return (const char *)debugfs_mountpoint;
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ret = find_mountpoint("debugfs", (long) DEBUGFS_MAGIC,
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debugfs_mountpoint, PATH_MAX + 1,
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debugfs_known_mountpoints);
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if (ret)
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debugfs_found = true;
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return ret;
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}
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/* mount the debugfs somewhere if it's not mounted */
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char *debugfs_mount(const char *mountpoint)
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{
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/* see if it's already mounted */
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if (debugfs_find_mountpoint())
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goto out;
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/* if not mounted and no argument */
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if (mountpoint == NULL) {
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/* see if environment variable set */
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mountpoint = getenv(PERF_DEBUGFS_ENVIRONMENT);
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/* if no environment variable, use default */
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if (mountpoint == NULL)
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mountpoint = DEBUGFS_DEFAULT_PATH;
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}
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if (mount(NULL, mountpoint, "debugfs", 0, NULL) < 0)
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return NULL;
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/* save the mountpoint */
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debugfs_found = true;
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strncpy(debugfs_mountpoint, mountpoint, sizeof(debugfs_mountpoint));
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out:
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return debugfs_mountpoint;
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}
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@ -1,23 +0,0 @@
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#ifndef __API_DEBUGFS_H__
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#define __API_DEBUGFS_H__
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#include "findfs.h"
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#ifndef DEBUGFS_MAGIC
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#define DEBUGFS_MAGIC 0x64626720
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#endif
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#ifndef PERF_DEBUGFS_ENVIRONMENT
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#define PERF_DEBUGFS_ENVIRONMENT "PERF_DEBUGFS_DIR"
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#endif
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bool debugfs_configured(void);
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const char *debugfs_find_mountpoint(void);
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char *debugfs_mount(const char *mountpoint);
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extern char debugfs_mountpoint[];
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int debugfs__strerror_open(int err, char *buf, size_t size, const char *filename);
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int debugfs__strerror_open_tp(int err, char *buf, size_t size, const char *sys, const char *name);
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#endif /* __API_DEBUGFS_H__ */
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@ -1,63 +0,0 @@
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#include <errno.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include <stdbool.h>
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#include <sys/vfs.h>
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#include "findfs.h"
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/* verify that a mountpoint is actually the type we want */
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int valid_mountpoint(const char *mount, long magic)
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{
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struct statfs st_fs;
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if (statfs(mount, &st_fs) < 0)
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return -ENOENT;
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else if ((long)st_fs.f_type != magic)
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return -ENOENT;
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return 0;
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}
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/* find the path to a mounted file system */
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const char *find_mountpoint(const char *fstype, long magic,
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char *mountpoint, int len,
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const char * const *known_mountpoints)
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{
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const char * const *ptr;
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char format[128];
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char type[100];
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FILE *fp;
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if (known_mountpoints) {
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ptr = known_mountpoints;
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while (*ptr) {
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if (valid_mountpoint(*ptr, magic) == 0) {
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strncpy(mountpoint, *ptr, len - 1);
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mountpoint[len-1] = 0;
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return mountpoint;
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}
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ptr++;
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}
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}
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/* give up and parse /proc/mounts */
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fp = fopen("/proc/mounts", "r");
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if (fp == NULL)
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return NULL;
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snprintf(format, 128, "%%*s %%%ds %%99s %%*s %%*d %%*d\n", len);
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while (fscanf(fp, format, mountpoint, type) == 2) {
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if (strcmp(type, fstype) == 0)
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break;
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}
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fclose(fp);
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if (strcmp(type, fstype) != 0)
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return NULL;
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return mountpoint;
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}
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@ -1,23 +0,0 @@
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#ifndef __API_FINDFS_H__
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#define __API_FINDFS_H__
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#include <stdbool.h>
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#define _STR(x) #x
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#define STR(x) _STR(x)
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/*
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* On most systems <limits.h> would have given us this, but not on some systems
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* (e.g. GNU/Hurd).
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*/
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#ifndef PATH_MAX
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#define PATH_MAX 4096
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#endif
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const char *find_mountpoint(const char *fstype, long magic,
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char *mountpoint, int len,
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const char * const *known_mountpoints);
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int valid_mountpoint(const char *mount, long magic);
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#endif /* __API_FINDFS_H__ */
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@ -1,78 +0,0 @@
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#include <errno.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include <unistd.h>
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#include <stdbool.h>
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#include <sys/vfs.h>
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#include <sys/types.h>
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#include <sys/stat.h>
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#include <sys/mount.h>
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#include <linux/kernel.h>
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#include "tracefs.h"
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#ifndef TRACEFS_DEFAULT_PATH
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#define TRACEFS_DEFAULT_PATH "/sys/kernel/tracing"
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#endif
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char tracefs_mountpoint[PATH_MAX + 1] = TRACEFS_DEFAULT_PATH;
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static const char * const tracefs_known_mountpoints[] = {
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TRACEFS_DEFAULT_PATH,
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"/sys/kernel/debug/tracing",
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"/tracing",
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"/trace",
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0,
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};
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static bool tracefs_found;
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bool tracefs_configured(void)
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{
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return tracefs_find_mountpoint() != NULL;
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}
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/* find the path to the mounted tracefs */
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const char *tracefs_find_mountpoint(void)
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{
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const char *ret;
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if (tracefs_found)
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return (const char *)tracefs_mountpoint;
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ret = find_mountpoint("tracefs", (long) TRACEFS_MAGIC,
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tracefs_mountpoint, PATH_MAX + 1,
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tracefs_known_mountpoints);
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if (ret)
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tracefs_found = true;
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return ret;
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}
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/* mount the tracefs somewhere if it's not mounted */
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char *tracefs_mount(const char *mountpoint)
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{
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/* see if it's already mounted */
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if (tracefs_find_mountpoint())
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goto out;
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/* if not mounted and no argument */
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if (mountpoint == NULL) {
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/* see if environment variable set */
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mountpoint = getenv(PERF_TRACEFS_ENVIRONMENT);
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/* if no environment variable, use default */
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if (mountpoint == NULL)
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mountpoint = TRACEFS_DEFAULT_PATH;
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}
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if (mount(NULL, mountpoint, "tracefs", 0, NULL) < 0)
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return NULL;
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/* save the mountpoint */
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tracefs_found = true;
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strncpy(tracefs_mountpoint, mountpoint, sizeof(tracefs_mountpoint));
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out:
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return tracefs_mountpoint;
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}
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@ -1,21 +0,0 @@
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#ifndef __API_TRACEFS_H__
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#define __API_TRACEFS_H__
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#include "findfs.h"
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#ifndef TRACEFS_MAGIC
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#define TRACEFS_MAGIC 0x74726163
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#endif
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#ifndef PERF_TRACEFS_ENVIRONMENT
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#define PERF_TRACEFS_ENVIRONMENT "PERF_TRACEFS_DIR"
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#endif
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bool tracefs_configured(void);
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const char *tracefs_find_mountpoint(void);
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int tracefs_valid_mountpoint(const char *debugfs);
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char *tracefs_mount(const char *mountpoint);
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extern char tracefs_mountpoint[];
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#endif /* __API_DEBUGFS_H__ */
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