[Crash-utility] [PATCH 08/10] shift ramdump_def.end_paddr calculation from alloc_program_headers() to is_ramdump()

Preparation. This also simplifies the code a little bit. Signed-off-by: Oleg Nesterov <oleg(a)redhat.com&gt; --- ramdump.c | 22 ++++++++-------------- 1 file changed, 8 insertions(+), 14 deletions(-) diff --git a/ramdump.c b/ramdump.c index ab93767..c6a8a85 100644 --- a/ramdump.c +++ b/ramdump.c @@ -59,29 +59,19 @@ static void alloc_elf_header(Elf64_Ehdr *ehdr, ushort e_machine) ehdr->e_shstrndx = 0; } -static int alloc_program_headers(Elf64_Phdr *phdr) +static void alloc_program_headers(Elf64_Phdr *phdr) { unsigned int i; - struct stat64 st; for (i = 0; i < nodes; i++) { phdr[i].p_type = PT_LOAD; - - if (0 > stat64(ramdump[i].path, &st)) { - error(INFO, "ramdump stat failed\n"); - return -1; - } - - phdr[i].p_filesz = st.st_size; + phdr[i].p_filesz = ramdump[i].end_paddr + 1 - ramdump[i].start_paddr; phdr[i].p_memsz = phdr[i].p_filesz; phdr[i].p_vaddr = 0; phdr[i].p_paddr = ramdump[i].start_paddr; - ramdump[i].end_paddr = ramdump[i].start_paddr + st.st_size - 1; phdr[i].p_flags = PF_R | PF_W | PF_X; phdr[i].p_align = 0; } - - return 0; } static char *write_elf(Elf64_Phdr *load, Elf64_Ehdr *e_head, size_t data_offset) @@ -219,8 +209,7 @@ char *ramdump_to_elf(void) load = (Elf64_Phdr *)ptr; - if (alloc_program_headers(load)) - goto end; + alloc_program_headers(load); offset += sizeof(Elf64_Phdr) * nodes; ptr += sizeof(Elf64_Phdr) * nodes; @@ -248,6 +237,7 @@ int is_ramdump(char *p) char *x = NULL, *y = NULL, *pat; size_t len; char *pattern; + struct stat64 st; int err = 0; if (nodes || !strchr(p, '@')) @@ -277,6 +267,10 @@ int is_ramdump(char *p) "ramdump %s open failed:%s\n", ramdump[nodes - 1].path, strerror(errno)); + if (fstat64(ramdump[nodes - 1].rfd, &st) < 0) + error(FATAL, "ramdump stat failed\n"); + ramdump[nodes - 1].end_paddr = + ramdump[nodes - 1].start_paddr + st.st_size - 1; } pat = NULL; -- 2.5.0