OpenJDK / jdk / jdk
changeset 51788:c0f9161f591e
8210836: Build fails with warn_unused_result in openjdk/src/jdk.hotspot.agent/linux/native/libsaproc/ps_core.c
Summary: Read in and process the return value of pread() while dealing with the PT_INTERP segment
Reviewed-by: stuefe, jcbeyler
| author | jgeorge |
|---|---|
| date | Tue, 18 Sep 2018 23:20:17 +0530 |
| parents | ba51515b64e5 |
| children | 0535b5a54b83 |
| files | src/jdk.hotspot.agent/linux/native/libsaproc/ps_core.c |
| diffstat | 1 files changed, 5 insertions(+), 1 deletions(-) [+] |
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--- a/src/jdk.hotspot.agent/linux/native/libsaproc/ps_core.c Tue Sep 18 10:43:01 2018 -0700 +++ b/src/jdk.hotspot.agent/linux/native/libsaproc/ps_core.c Tue Sep 18 23:20:17 2018 +0530 @@ -795,7 +795,11 @@ if (exec_php->p_filesz > BUF_SIZE) { goto err; } - pread(ph->core->exec_fd, interp_name, exec_php->p_filesz, exec_php->p_offset); + if (pread(ph->core->exec_fd, interp_name, + exec_php->p_filesz, exec_php->p_offset) != exec_php->p_filesz) { + print_debug("Unable to read in the ELF interpreter\n"); + goto err; + } interp_name[exec_php->p_filesz] = '\0'; print_debug("ELF interpreter %s\n", interp_name); // read interpreter segments as well