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tools lib api fs: Add FSTYPE__configured() method

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Add FSTYPE__configured() (where FSTYPE is one of sysfs, procfs, debugfs,
tracefs) interface that returns bool state of the filesystem mount:

  true - mounted, false - not mounted

It will not try to mount the filesystem.

Signed-off-by: Jiri Olsa <[email protected]>
Cc: Raphael Beamonte <[email protected]>
Cc: David Ahern <[email protected]>
Cc: Matt Fleming <[email protected]>
Cc: Namhyung Kim <[email protected]>
Cc: Peter Zijlstra <[email protected]>
Cc: Steven Rostedt <[email protected]>
Link: http://lkml.kernel.org/r/[email protected]
Signed-off-by: Arnaldo Carvalho de Melo <[email protected]>
This commit is contained in:
Jiri Olsa 2015-09-02 09:56:42 +02:00 • committed by Arnaldo Carvalho de Melo
commit 709adcb339
2 changed files with 18 additions and 10 deletions
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23
tools/lib/api/fs/fs.c
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@ -244,15 +244,20 @@ static const char *fs__mount(int idx)
return fs__check_mounts(fs) ? fs->path : NULL;
}
#define FS(name, idx) \
const char *name##__mountpoint(void) \
{ \
return fs__mountpoint(idx); \
} \
\
const char *name##__mount(void) \
{ \
return fs__mount(idx); \
#define FS(name, idx) \
const char *name##__mountpoint(void) \
{ \
return fs__mountpoint(idx); \
} \
\
const char *name##__mount(void) \
{ \
return fs__mount(idx); \
} \
\
bool name##__configured(void) \
{ \
return name##__mountpoint() != NULL; \
}
FS(sysfs, FS__SYSFS);

5
tools/lib/api/fs/fs.h
View file

@ -1,6 +1,8 @@
#ifndef __API_FS__
#define __API_FS__
#include <stdbool.h>
/*
* On most systems <limits.h> would have given us this, but not on some systems
* (e.g. GNU/Hurd).
@ -11,7 +13,8 @@
#define FS(name) \
const char *name##__mountpoint(void); \
const char *name##__mount(void);
const char *name##__mount(void); \
bool name##__configured(void); \
FS(sysfs)
FS(procfs)