diff options
Diffstat (limited to 'src/basic/process-util.c')
| -rw-r--r-- | src/basic/process-util.c | 11 |
1 files changed, 8 insertions, 3 deletions
diff --git a/src/basic/process-util.c b/src/basic/process-util.c index 4c05f16db5..8db7f462d7 100644 --- a/src/basic/process-util.c +++ b/src/basic/process-util.c @@ -46,6 +46,11 @@ #include "user-util.h" #include "utf8.h" +/* The kernel limits userspace processes to TASK_COMM_LEN (16 bytes), but allows higher values for its own + * workers, e.g. "kworker/u9:3-kcryptd/253:0". Let's pick a fixed smallish limit that will work for the kernel. + */ +#define COMM_MAX_LEN 128 + static int get_process_state(pid_t pid) { const char *p; char state; @@ -82,7 +87,7 @@ int get_process_comm(pid_t pid, char **ret) { assert(ret); assert(pid >= 0); - escaped = new(char, TASK_COMM_LEN); + escaped = new(char, COMM_MAX_LEN); if (!escaped) return -ENOMEM; @@ -95,7 +100,7 @@ int get_process_comm(pid_t pid, char **ret) { return r; /* Escape unprintable characters, just in case, but don't grow the string beyond the underlying size */ - cellescape(escaped, TASK_COMM_LEN, comm); + cellescape(escaped, COMM_MAX_LEN, comm); *ret = TAKE_PTR(escaped); return 0; @@ -209,7 +214,7 @@ int rename_process(const char name[]) { * can use PR_SET_NAME, which sets the thread name for the calling thread. */ if (prctl(PR_SET_NAME, name) < 0) log_debug_errno(errno, "PR_SET_NAME failed: %m"); - if (l >= TASK_COMM_LEN) /* Linux process names can be 15 chars at max */ + if (l >= TASK_COMM_LEN) /* Linux userspace process names can be 15 chars at max */ truncated = true; /* Second step, change glibc's ID of the process name. */ |