diff options
Diffstat (limited to 'kexec/arch/arm64/kexec-vmlinuz-arm64.c')
| -rw-r--r-- | kexec/arch/arm64/kexec-vmlinuz-arm64.c | 26 |
1 files changed, 23 insertions, 3 deletions
diff --git a/kexec/arch/arm64/kexec-vmlinuz-arm64.c b/kexec/arch/arm64/kexec-vmlinuz-arm64.c index c0ee47c8..e291a34c 100644 --- a/kexec/arch/arm64/kexec-vmlinuz-arm64.c +++ b/kexec/arch/arm64/kexec-vmlinuz-arm64.c @@ -34,6 +34,7 @@ #include "arch/options.h" static int kernel_fd = -1; +static off_t decompressed_size; /* Returns: * -1 : in case of error/invalid format (not a valid PE+compressed ZBOOT format. @@ -72,7 +73,7 @@ int pez_arm64_probe(const char *kernel_buf, off_t kernel_size) return -1; } - ret = pez_prepare(buf, buf_sz, &kernel_fd); + ret = pez_prepare(buf, buf_sz, &kernel_fd, &decompressed_size); if (!ret) { /* validate the arm64 specific header */ @@ -98,8 +99,27 @@ bad_header: int pez_arm64_load(int argc, char **argv, const char *buf, off_t len, struct kexec_info *info) { - info->kernel_fd = kernel_fd; - return image_arm64_load(argc, argv, buf, len, info); + if (kernel_fd > 0 && decompressed_size > 0) { + char *kbuf; + off_t nread; + int fd; + + info->kernel_fd = kernel_fd; + fd = dup(kernel_fd); + if (fd < 0) { + dbgprintf("%s: dup fd failed.\n", __func__); + return -1; + } + kbuf = slurp_fd(fd, NULL, decompressed_size, &nread); + if (!kbuf || nread != decompressed_size) { + dbgprintf("%s: slurp_fd failed.\n", __func__); + return -1; + } + return image_arm64_load(argc, argv, kbuf, decompressed_size, info); + } + + dbgprintf("%s: wrong kernel file descriptor.\n", __func__); + return -1; } void pez_arm64_usage(void) |