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author | Scott Wood <scottwood@freescale.com> | 2014-04-07 23:49:35 (GMT) |
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committer | Scott Wood <scottwood@freescale.com> | 2014-04-07 23:49:35 (GMT) |
commit | 62b8c978ee6b8d135d9e7953221de58000dba986 (patch) | |
tree | 683b04b2e627f6710c22c151b23c8cc9a165315e /tools/perf/util/data.c | |
parent | 78fd82238d0e5716578c326404184a27ba67fd6e (diff) | |
download | linux-fsl-qoriq-62b8c978ee6b8d135d9e7953221de58000dba986.tar.xz |
Rewind v3.13-rc3+ (78fd82238d0e5716) to v3.12
Diffstat (limited to 'tools/perf/util/data.c')
-rw-r--r-- | tools/perf/util/data.c | 120 |
1 files changed, 0 insertions, 120 deletions
diff --git a/tools/perf/util/data.c b/tools/perf/util/data.c deleted file mode 100644 index 7d09faf..0000000 --- a/tools/perf/util/data.c +++ /dev/null @@ -1,120 +0,0 @@ -#include <linux/compiler.h> -#include <linux/kernel.h> -#include <sys/types.h> -#include <sys/stat.h> -#include <unistd.h> -#include <string.h> - -#include "data.h" -#include "util.h" - -static bool check_pipe(struct perf_data_file *file) -{ - struct stat st; - bool is_pipe = false; - int fd = perf_data_file__is_read(file) ? - STDIN_FILENO : STDOUT_FILENO; - - if (!file->path) { - if (!fstat(fd, &st) && S_ISFIFO(st.st_mode)) - is_pipe = true; - } else { - if (!strcmp(file->path, "-")) - is_pipe = true; - } - - if (is_pipe) - file->fd = fd; - - return file->is_pipe = is_pipe; -} - -static int check_backup(struct perf_data_file *file) -{ - struct stat st; - - if (!stat(file->path, &st) && st.st_size) { - /* TODO check errors properly */ - char oldname[PATH_MAX]; - snprintf(oldname, sizeof(oldname), "%s.old", - file->path); - unlink(oldname); - rename(file->path, oldname); - } - - return 0; -} - -static int open_file_read(struct perf_data_file *file) -{ - struct stat st; - int fd; - - fd = open(file->path, O_RDONLY); - if (fd < 0) { - int err = errno; - - pr_err("failed to open %s: %s", file->path, strerror(err)); - if (err == ENOENT && !strcmp(file->path, "perf.data")) - pr_err(" (try 'perf record' first)"); - pr_err("\n"); - return -err; - } - - if (fstat(fd, &st) < 0) - goto out_close; - - if (!file->force && st.st_uid && (st.st_uid != geteuid())) { - pr_err("file %s not owned by current user or root\n", - file->path); - goto out_close; - } - - if (!st.st_size) { - pr_info("zero-sized file (%s), nothing to do!\n", - file->path); - goto out_close; - } - - file->size = st.st_size; - return fd; - - out_close: - close(fd); - return -1; -} - -static int open_file_write(struct perf_data_file *file) -{ - if (check_backup(file)) - return -1; - - return open(file->path, O_CREAT|O_RDWR|O_TRUNC, S_IRUSR|S_IWUSR); -} - -static int open_file(struct perf_data_file *file) -{ - int fd; - - fd = perf_data_file__is_read(file) ? - open_file_read(file) : open_file_write(file); - - file->fd = fd; - return fd < 0 ? -1 : 0; -} - -int perf_data_file__open(struct perf_data_file *file) -{ - if (check_pipe(file)) - return 0; - - if (!file->path) - file->path = "perf.data"; - - return open_file(file); -} - -void perf_data_file__close(struct perf_data_file *file) -{ - close(file->fd); -} |