diff options
Diffstat (limited to 'tools/libxc/xc_core.c')
| -rw-r--r-- | tools/libxc/xc_core.c | 14 |
1 files changed, 11 insertions, 3 deletions
diff --git a/tools/libxc/xc_core.c b/tools/libxc/xc_core.c index 43ac87d47f..0c763bbf8f 100644 --- a/tools/libxc/xc_core.c +++ b/tools/libxc/xc_core.c @@ -71,8 +71,12 @@ xc_domain_dumpcore(int xc_handle, (sizeof(vcpu_guest_context_t) * nr_vcpus) + (nr_pages * sizeof(unsigned long))); - write(dump_fd, &header, sizeof(struct xc_core_header)); - write(dump_fd, &ctxt, sizeof(ctxt[0]) * nr_vcpus); + if (write(dump_fd, &header, sizeof(struct xc_core_header)) < 0 || + write(dump_fd, &ctxt, sizeof(ctxt[0]) * nr_vcpus) < 0) + { + PERROR("write failed"); + goto error_out; + } if ((page_array = malloc(nr_pages * sizeof(unsigned long))) == NULL) { printf("Could not allocate memory\n"); @@ -82,7 +86,11 @@ xc_domain_dumpcore(int xc_handle, printf("Could not get the page frame list\n"); goto error_out; } - write(dump_fd, page_array, nr_pages * sizeof(unsigned long)); + if (write(dump_fd, page_array, nr_pages * sizeof(unsigned long)) < 0) + { + PERROR("write failed"); + goto error_out; + } lseek(dump_fd, header.xch_pages_offset, SEEK_SET); for (dump_mem = dump_mem_start, i = 0; i < nr_pages; i++) { copy_from_domain_page(xc_handle, domid, page_array, i, dump_mem); |