diff options
| author | Harald Hoyer <harald@redhat.com> | 2013-03-07 08:52:54 +0100 |
|---|---|---|
| committer | Lennart Poettering <lennart@poettering.net> | 2013-03-07 16:09:22 +0100 |
| commit | e90f9fa4d1cab6f73fc502fe9ef705c1bb2912a0 (patch) | |
| tree | b51656f91da0c129aae7eecc3bd3463463ff984c /src/bootchart/log.c | |
| parent | 650001c6f7532601a9e5f685c348dae9541352cf (diff) | |
bootchart: add parameter "-C" to expand process names to the full cmdline
Diffstat (limited to 'src/bootchart/log.c')
| -rw-r--r-- | src/bootchart/log.c | 33 |
1 files changed, 31 insertions, 2 deletions
diff --git a/src/bootchart/log.c b/src/bootchart/log.c index cf6c3a73f6..1e3f4a9e8c 100644 --- a/src/bootchart/log.c +++ b/src/bootchart/log.c @@ -95,6 +95,26 @@ static char *bufgetline(char *buf) return c; } +static int pid_cmdline_strncpy(char *buffer, int pid, size_t buf_len) { + char filename[PATH_MAX]; + int _cleanup_close_ fd=-1; + ssize_t n; + + sprintf(filename, "%d/cmdline", pid); + fd = openat(procfd, filename, O_RDONLY); + if (fd < 0) + return -errno; + + n = read(fd, buffer, buf_len-1); + if (n > 0) { + int i; + for (i = 0; i < n; i++) + if (buffer[i] == '\0') + buffer[i] = ' '; + buffer[n] = '\0'; + } + return 0; +} void log_sample(int sample) { @@ -273,7 +293,12 @@ schedstat_next: if (!sscanf(buf, "%s %*s %*s", key)) continue; - strncpy(ps->name, key, 16); + strncpy(ps->name, key, 256); + + /* cmdline */ + if (show_cmdline) + pid_cmdline_strncpy(ps->name, pid, 256); + /* discard line 2 */ m = bufgetline(buf); if (!m) @@ -433,7 +458,11 @@ catch_rename: if (!sscanf(buf, "%s %*s %*s", key)) continue; - strncpy(ps->name, key, 16); + strncpy(ps->name, key, 256); + + /* cmdline */ + if (show_cmdline) + pid_cmdline_strncpy(ps->name, pid, 256); } } } |