diff options
Diffstat (limited to 'src/librc/librc-daemon.c')
| -rw-r--r-- | src/librc/librc-daemon.c | 18 |
1 files changed, 10 insertions, 8 deletions
diff --git a/src/librc/librc-daemon.c b/src/librc/librc-daemon.c index e1f32211..e2e3bbf1 100644 --- a/src/librc/librc-daemon.c +++ b/src/librc/librc-daemon.c @@ -85,18 +85,20 @@ static bool pid_is_exec(pid_t pid, const char *const *argv) char buffer[PATH_MAX]; char *p; int fd; - int r; + ssize_t bytes; /* Check it's the right binary */ snprintf(cmdline, sizeof(cmdline), "/proc/%u/exe", pid); - memset(buffer, 0, sizeof(buffer)); - if (readlink(cmdline, buffer, sizeof(buffer)) != -1) { + bytes = readlink(cmdline, buffer, sizeof(buffer)); + if (bytes > 0) { + buffer[bytes] = '\0'; if (strcmp(*argv, buffer) == 0) return true; /* We should cater for deleted binaries too */ - if (strlen(buffer) > 10) { - p = buffer + (strlen(buffer) - 10); + bytes = strlen(buffer); + if (bytes) { + p = buffer + (bytes - 10); if (strcmp(p, " (deleted)") == 0) { *p = '\0'; if (strcmp(buffer, *argv) == 0) @@ -109,12 +111,12 @@ static bool pid_is_exec(pid_t pid, const char *const *argv) if ((fd = open(cmdline, O_RDONLY)) < 0) return false; - r = read(fd, buffer, sizeof(buffer)); + bytes = read(fd, buffer, sizeof(buffer)); close(fd); - if (r == -1) + if (bytes == -1) return false; - buffer[r] = '\0'; + buffer[bytes] = '\0'; p = buffer; while (*argv) { if (strcmp(*argv, p) != 0) |