diff options
Diffstat (limited to 'src/util.c')
| -rw-r--r-- | src/util.c | 44 |
1 files changed, 44 insertions, 0 deletions
diff --git a/src/util.c b/src/util.c index e43e4b725..343cf8850 100644 --- a/src/util.c +++ b/src/util.c @@ -790,6 +790,47 @@ printpidfd(pid_t pid_of_fd, int fd, const char *path) return true; } +static bool +print_fdinfo_sigmask(const char *value, void *data) +{ +#ifdef WORDS_BIGENDIAN + unsigned int pos_xor_mask = current_wordsize - 1; +#else + unsigned int pos_xor_mask = 0; +#endif + size_t sigset_size = strlen(value) / 2; + uint8_t *sigmask = xmalloc(sigset_size); + + for (size_t i = 0; i < sigset_size; ++i) { + uint8_t byte; + if (sscanf(value + i * 2, "%02hhx", &byte) != 1) { + free(sigmask); + return false; + } + sigmask[(sigset_size - 1 - i) ^ pos_xor_mask] = byte; + } + + tprint_associated_info_begin(); + tprints_string(sprintsigmask_n("signalfd:", sigmask, sigset_size)); + tprint_associated_info_end(); + + free(sigmask); + return true; +} + +static bool +printsignalfd(pid_t pid_of_fd, int fd, const char *path) +{ + static const char signalfd_path[] = "anon_inode:[signalfd]"; + static const char sigmask_pfx[] = "sigmask:\t"; + + if (strcmp(path, signalfd_path)) + return false; + + return scan_fdinfo(pid_of_fd, fd, sigmask_pfx, sizeof(sigmask_pfx) - 1, + print_fdinfo_sigmask, NULL); +} + static void print_quoted_string_in_angle_brackets(const char *str, const bool deleted) { @@ -821,6 +862,9 @@ printfd_pid_with_finfo(struct tcb *tcp, pid_t pid, int fd, const struct finfo *f if (is_number_in_set(DECODE_FD_PIDFD, decode_fd_set) && printpidfd(pid, fd, path)) goto printed; + if (is_number_in_set(DECODE_FD_SIGNALFD, decode_fd_set) && + printsignalfd(pid, fd, path)) + goto printed; if (is_number_in_set(DECODE_FD_PATH, decode_fd_set)) print_quoted_string_in_angle_brackets(path, finfo? finfo->deleted: deleted); |