diff options
Diffstat (limited to 'usr/src/cmd/file/elf_read.c')
| -rw-r--r-- | usr/src/cmd/file/elf_read.c | 70 |
1 files changed, 53 insertions, 17 deletions
diff --git a/usr/src/cmd/file/elf_read.c b/usr/src/cmd/file/elf_read.c index 03c73f57a9..90faabfe49 100644 --- a/usr/src/cmd/file/elf_read.c +++ b/usr/src/cmd/file/elf_read.c @@ -19,7 +19,7 @@ * CDDL HEADER END */ /* Copyright (c) 1984, 1986, 1987, 1988, 1989 AT&T */ -/* All Rights Reserved */ +/* All Rights Reserved */ /* Copyright (c) 1987, 1988 Microsoft Corporation */ @@ -79,6 +79,7 @@ #include <sys/types.h> #include <sys/stat.h> #include <sys/elf.h> +#include <sys/link.h> #include <elfcap.h> #include "file.h" #include "elf_read.h" @@ -125,7 +126,7 @@ get_format(void) /* * file_xlatetom: translate different headers from file - * representation to memory representaion. + * representation to memory representaion. */ #define HDRSZ 512 static int @@ -141,7 +142,7 @@ file_xlatetom(Elf_Type type, char *hdr) /* will convert only these types */ if (type != ELF_T_EHDR && type != ELF_T_PHDR && type != ELF_T_SHDR && type != ELF_T_WORD && - type != ELF_T_CAP) + type != ELF_T_CAP && type != ELF_T_DYN) return (ELF_READ_FAIL); src.d_buf = (Elf_Void *)hdr; @@ -162,7 +163,7 @@ file_xlatetom(Elf_Type type, char *hdr) /* * xlatetom_nhdr: There is no routine to convert Note header - * so we convert each field of this header. + * so we convert each field of this header. */ static int xlatetom_nhdr(Elf_Nhdr *nhdr) @@ -177,7 +178,7 @@ xlatetom_nhdr(Elf_Nhdr *nhdr) /* * elf_read: reads elf header, program, section headers to - * collect all information needed for file(1) + * collect all information needed for file(1) * output and stores them in Elf_Info. */ int @@ -300,7 +301,7 @@ get_shdr(Elf_Info *EI, int inx) /* * process_phdr: Read Program Headers and see if it is a core * file of either new or (pre-restructured /proc) - * type, read the name of the file that dumped this + * type, read the name of the file that dumped this * core, else see if this is a dynamically linked. */ static int @@ -415,17 +416,13 @@ process_phdr(Elf_Info *EI) static int process_shdr(Elf_Info *EI) { - int capn, mac; - int i, j, idx; - FILE_ELF_OFF_T cap_off; - FILE_ELF_SIZE_T csize; + int mac; + int i, idx; char *strtab; size_t strtab_sz; - Elf_Cap Chdr; + uint64_t j; Elf_Shdr *shdr = &EI_Shdr; - - csize = sizeof (Elf_Cap); mac = EI_Ehdr.e_machine; /* if there are no sections, return success anyway */ @@ -457,9 +454,15 @@ process_shdr(Elf_Info *EI) continue; } - cap_off = shdr->sh_offset; if (shdr->sh_type == SHT_SUNW_cap) { - char capstr[128]; + char capstr[128]; + Elf_Cap Chdr; + FILE_ELF_OFF_T cap_off; + FILE_ELF_SIZE_T csize; + uint64_t capn; + + cap_off = shdr->sh_offset; + csize = sizeof (Elf_Cap); if (shdr->sh_size == 0 || shdr->sh_entsize == 0) { (void) fprintf(stderr, ELF_ERR_ELFCAP1, @@ -471,8 +474,8 @@ process_shdr(Elf_Info *EI) /* * read cap and xlate the values */ - if (pread64(EI->elffd, &Chdr, csize, cap_off) - != csize || + if ((pread64(EI->elffd, &Chdr, csize, cap_off) + != csize) || file_xlatetom(ELF_T_CAP, (char *)&Chdr) == 0) { (void) fprintf(stderr, ELF_ERR_ELFCAP2, @@ -503,6 +506,39 @@ process_shdr(Elf_Info *EI) (void) strlcat(EI->cap_str, capstr, sizeof (EI->cap_str)); } + } else if (shdr->sh_type == SHT_DYNAMIC) { + Elf_Dyn dyn; + FILE_ELF_SIZE_T dsize; + FILE_ELF_OFF_T doff; + uint64_t dynn; + + doff = shdr->sh_offset; + dsize = sizeof (Elf_Dyn); + + if (shdr->sh_size == 0 || shdr->sh_entsize == 0) { + (void) fprintf(stderr, ELF_ERR_DYNAMIC1, + File, EI->file); + return (ELF_READ_FAIL); + } + + dynn = (shdr->sh_size / shdr->sh_entsize); + for (j = 0; j < dynn; j++) { + if (pread64(EI->elffd, &dyn, dsize, doff) + != dsize || + file_xlatetom(ELF_T_DYN, (char *)&dyn) + == 0) { + (void) fprintf(stderr, ELF_ERR_DYNAMIC2, + File, EI->file); + return (ELF_READ_FAIL); + } + + doff += dsize; + + if ((dyn.d_tag == DT_SUNW_KMOD) && + (dyn.d_un.d_val == 1)) { + EI->kmod = B_TRUE; + } + } } /* |