diff options
Diffstat (limited to 'src/core/ima-setup.c')
| -rw-r--r-- | src/core/ima-setup.c | 15 |
1 files changed, 13 insertions, 2 deletions
diff --git a/src/core/ima-setup.c b/src/core/ima-setup.c index 7721b3ecaf..4d8b638115 100644 --- a/src/core/ima-setup.c +++ b/src/core/ima-setup.c @@ -24,9 +24,10 @@ #include <unistd.h> #include <errno.h> #include <fcntl.h> +#include <sys/stat.h> +#include <sys/mman.h> #include "ima-setup.h" -#include "copy.h" #include "util.h" #include "log.h" @@ -39,6 +40,8 @@ int ima_setup(void) { #ifdef HAVE_IMA _cleanup_close_ int policyfd = -1, imafd = -1; + struct stat st; + char *policy; if (access(IMA_SECFS_DIR, F_OK) < 0) { log_debug("IMA support is disabled in the kernel, ignoring."); @@ -63,12 +66,20 @@ int ima_setup(void) { return 0; } - r = copy_bytes(policyfd, imafd, (off_t) -1, false); + if (fstat(policyfd, &st) < 0) + return log_error_errno(errno, "Failed to fstat "IMA_POLICY_PATH": %m"); + + policy = mmap(NULL, st.st_size, PROT_READ, MAP_PRIVATE, policyfd, 0); + if (policy == MAP_FAILED) + return log_error_errno(errno, "Failed to mmap "IMA_POLICY_PATH": %m"); + + r = loop_write(imafd, policy, (size_t) st.st_size, false); if (r < 0) log_error_errno(r, "Failed to load the IMA custom policy file "IMA_POLICY_PATH": %m"); else log_info("Successfully loaded the IMA custom policy "IMA_POLICY_PATH"."); + munmap(policy, st.st_size); #endif /* HAVE_IMA */ return r; } |