src/jdk.hotspot.agent/linux/native/libsaproc/ps_core.c

rev 13166 : read/write APIs in class os shall return ssize_t

*** 1,7 ****
  /*
!  * Copyright (c) 2003, 2013, Oracle and/or its affiliates. All rights reserved.
   * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
   *
   * This code is free software; you can redistribute it and/or modify it
   * under the terms of the GNU General Public License version 2 only, as
   * published by the Free Software Foundation.
--- 1,7 ----
  /*
!  * Copyright (c) 2003, 2017, Oracle and/or its affiliates. All rights reserved.
   * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
   *
   * This code is free software; you can redistribute it and/or modify it
   * under the terms of the GNU General Public License version 2 only, as
   * published by the Free Software Foundation.
*** 821,839 ****
          if (add_map_info(ph, ph->core->exec_fd, exec_php->p_offset, exec_php->p_vaddr, exec_php->p_filesz) == NULL) goto err;
        }
        break;
      }
  
!     // read the interpreter and it's segments
      case PT_INTERP: {
        char interp_name[BUF_SIZE + 1];
  
        // BUF_SIZE is PATH_MAX + NAME_MAX + 1.
        if (exec_php->p_filesz > BUF_SIZE) {
          goto err;
        }
!       pread(ph->core->exec_fd, interp_name, exec_php->p_filesz, exec_php->p_offset);
        interp_name[exec_php->p_filesz] = '\0';
        print_debug("ELF interpreter %s\n", interp_name);
        // read interpreter segments as well
        if ((ph->core->interp_fd = pathmap_open(interp_name)) < 0) {
          print_debug("can't open runtime loader\n");
--- 821,844 ----
          if (add_map_info(ph, ph->core->exec_fd, exec_php->p_offset, exec_php->p_vaddr, exec_php->p_filesz) == NULL) goto err;
        }
        break;
      }
  
!     // read the interpreter and its segments
      case PT_INTERP: {
+       ssize_t res;
        char interp_name[BUF_SIZE + 1];
  
        // BUF_SIZE is PATH_MAX + NAME_MAX + 1.
        if (exec_php->p_filesz > BUF_SIZE) {
          goto err;
        }
!       res = pread(ph->core->exec_fd, interp_name, exec_php->p_filesz, exec_php->p_offset);
!       if (res < 0) {
!         print_debug("couldn't read ELF interpreter name\n");
!         goto err;
!       }
        interp_name[exec_php->p_filesz] = '\0';
        print_debug("ELF interpreter %s\n", interp_name);
        // read interpreter segments as well
        if ((ph->core->interp_fd = pathmap_open(interp_name)) < 0) {
          print_debug("can't open runtime loader\n");