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Date: Thu, 11 Dec 2014 18:26:02 -0300 From: Arnaldo Carvalho de Melo <acme@...nel.org> To: Ingo Molnar <mingo@...nel.org> Cc: linux-kernel@...r.kernel.org, Arnaldo Carvalho de Melo <acme@...hat.com>, Adrian Hunter <adrian.hunter@...el.com>, Borislav Petkov <bp@...e.de>, David Ahern <dsahern@...il.com>, Don Zickus <dzickus@...hat.com>, Frederic Weisbecker <fweisbec@...il.com>, Jiri Olsa <jolsa@...hat.com>, Mike Galbraith <efault@....de>, Namhyung Kim <namhyung@...nel.org>, Paul Mackerras <paulus@...ba.org>, Peter Zijlstra <peterz@...radead.org>, Stephane Eranian <eranian@...gle.com> Subject: [PATCH 14/18] tools lib fs: Adopt filename__read_int from tools/perf/ From: Arnaldo Carvalho de Melo <acme@...hat.com> Will be useful for new helpers to read sysctl values. Cc: Adrian Hunter <adrian.hunter@...el.com> Cc: Borislav Petkov <bp@...e.de> Cc: David Ahern <dsahern@...il.com> Cc: Don Zickus <dzickus@...hat.com> Cc: Frederic Weisbecker <fweisbec@...il.com> Cc: Jiri Olsa <jolsa@...hat.com> Cc: Mike Galbraith <efault@....de> Cc: Namhyung Kim <namhyung@...nel.org> Cc: Paul Mackerras <paulus@...ba.org> Cc: Peter Zijlstra <peterz@...radead.org> Cc: Stephane Eranian <eranian@...gle.com> Signed-off-by: Arnaldo Carvalho de Melo <acme@...hat.com> --- tools/lib/api/fs/fs.c | 21 +++++++++++++++++++++ tools/lib/api/fs/fs.h | 2 ++ tools/perf/util/util.c | 17 ----------------- tools/perf/util/util.h | 1 - 4 files changed, 23 insertions(+), 18 deletions(-) diff --git a/tools/lib/api/fs/fs.c b/tools/lib/api/fs/fs.c index c1b49c36a951..b8d0df8878d1 100644 --- a/tools/lib/api/fs/fs.c +++ b/tools/lib/api/fs/fs.c @@ -7,6 +7,10 @@ #include <stdlib.h> #include <string.h> #include <sys/vfs.h> +#include <sys/types.h> +#include <sys/stat.h> +#include <fcntl.h> +#include <unistd.h> #include "debugfs.h" #include "fs.h" @@ -163,3 +167,20 @@ const char *name##__mountpoint(void) \ FS__MOUNTPOINT(sysfs, FS__SYSFS); FS__MOUNTPOINT(procfs, FS__PROCFS); + +int filename__read_int(const char *filename, int *value) +{ + char line[64]; + int fd = open(filename, O_RDONLY), err = -1; + + if (fd < 0) + return -1; + + if (read(fd, line, sizeof(line)) > 0) { + *value = atoi(line); + err = 0; + } + + close(fd); + return err; +} diff --git a/tools/lib/api/fs/fs.h b/tools/lib/api/fs/fs.h index cb7049551f33..4d0aef6e7163 100644 --- a/tools/lib/api/fs/fs.h +++ b/tools/lib/api/fs/fs.h @@ -11,4 +11,6 @@ const char *sysfs__mountpoint(void); const char *procfs__mountpoint(void); + +int filename__read_int(const char *filename, int *value); #endif /* __API_FS__ */ diff --git a/tools/perf/util/util.c b/tools/perf/util/util.c index d5eab3f3323f..41125e5b011e 100644 --- a/tools/perf/util/util.c +++ b/tools/perf/util/util.c @@ -442,23 +442,6 @@ unsigned long parse_tag_value(const char *str, struct parse_tag *tags) return (unsigned long) -1; } -int filename__read_int(const char *filename, int *value) -{ - char line[64]; - int fd = open(filename, O_RDONLY), err = -1; - - if (fd < 0) - return -1; - - if (read(fd, line, sizeof(line)) > 0) { - *value = atoi(line); - err = 0; - } - - close(fd); - return err; -} - int filename__read_str(const char *filename, char **buf, size_t *sizep) { size_t size = 0, alloc_size = 0; diff --git a/tools/perf/util/util.h b/tools/perf/util/util.h index abc445ee4f60..008b361b1758 100644 --- a/tools/perf/util/util.h +++ b/tools/perf/util/util.h @@ -343,7 +343,6 @@ char *get_srcline(struct dso *dso, unsigned long addr, struct symbol *sym, bool show_sym); void free_srcline(char *srcline); -int filename__read_int(const char *filename, int *value); int filename__read_str(const char *filename, char **buf, size_t *sizep); int perf_event_paranoid(void); -- 1.9.3 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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