diff options
Diffstat (limited to 'libbb/find_pid_by_name.c')
| -rw-r--r-- | libbb/find_pid_by_name.c | 20 |
1 files changed, 18 insertions, 2 deletions
diff --git a/libbb/find_pid_by_name.c b/libbb/find_pid_by_name.c index 13ccb54..cfc5b34 100644 --- a/libbb/find_pid_by_name.c +++ b/libbb/find_pid_by_name.c @@ -38,6 +38,14 @@ execXXX("/proc/self/exe", applet_name, params....) and therefore comm field contains "exe". */ +static const char *bb_basename(const char *name) +{ + const char *cp = strrchr(name, '/'); + if (cp) + return cp + 1; + return name; +} + /* find_pid_by_name() * * Modified by Vladimir Oleynik for use with libbb/procps.c @@ -55,8 +63,16 @@ pid_t* find_pid_by_name(const char* procName) procps_status_t* p = NULL; pidList = xmalloc(sizeof(*pidList)); - while ((p = procps_scan(p, PSSCAN_PID|PSSCAN_COMM))) { - if (strncmp(p->comm, procName, sizeof(p->comm)-1) == 0) { + while ((p = procps_scan(p, PSSCAN_PID|PSSCAN_COMM|PSSCAN_ARGV0))) { + if ( + /* we require comm to match and to not be truncated */ + /* in Linux, if comm is 15 chars, it may be a truncated + * name, so we don't allow that to match */ + (!p->comm[sizeof(p->comm)-2] && strcmp(p->comm, procName) == 0) + /* or we require argv0 to match (essential for matching reexeced /proc/self/exe)*/ + || (p->argv0 && strcmp(bb_basename(p->argv0), procName) == 0) + /* TOOD: we can also try exe, do we want that? */ + ) { pidList = xrealloc(pidList, sizeof(*pidList) * (i+2)); pidList[i++] = p->pid; } |