diff options
Diffstat (limited to 'linux-user')
| -rw-r--r-- | linux-user/elfload.c | 8 | ||||
| -rw-r--r-- | linux-user/main.c | 24 | ||||
| -rw-r--r-- | linux-user/syscall.c | 6 |
3 files changed, 31 insertions, 7 deletions
diff --git a/linux-user/elfload.c b/linux-user/elfload.c index 140a971632..c6731013fd 100644 --- a/linux-user/elfload.c +++ b/linux-user/elfload.c @@ -2209,9 +2209,8 @@ static uintptr_t pgd_find_hole_fallback(uintptr_t guest_size, uintptr_t brk, void * mmap_start = mmap((void *) align_start, guest_size, PROT_NONE, flags, -1, 0); if (mmap_start != MAP_FAILED) { - munmap((void *) align_start, guest_size); - if (MAP_FIXED_NOREPLACE != 0 || - mmap_start == (void *) align_start) { + munmap(mmap_start, guest_size); + if (mmap_start == (void *) align_start) { return (uintptr_t) mmap_start + offset; } } @@ -2236,7 +2235,8 @@ static uintptr_t pgb_find_hole(uintptr_t guest_loaddr, uintptr_t guest_size, brk = (uintptr_t)sbrk(0); if (!maps) { - return pgd_find_hole_fallback(guest_size, brk, align, offset); + ret = pgd_find_hole_fallback(guest_size, brk, align, offset); + return ret == -1 ? -1 : ret - guest_loaddr; } /* The first hole is before the first map entry. */ diff --git a/linux-user/main.c b/linux-user/main.c index 4f4746dce8..f956afccab 100644 --- a/linux-user/main.c +++ b/linux-user/main.c @@ -26,6 +26,7 @@ #include <sys/syscall.h> #include <sys/resource.h> #include <sys/shm.h> +#include <linux/binfmts.h> #include "qapi/error.h" #include "qemu.h" @@ -49,6 +50,11 @@ #include "cpu_loop-common.h" #include "crypto/init.h" +#ifndef AT_FLAGS_PRESERVE_ARGV0 +#define AT_FLAGS_PRESERVE_ARGV0_BIT 0 +#define AT_FLAGS_PRESERVE_ARGV0 (1 << AT_FLAGS_PRESERVE_ARGV0_BIT) +#endif + char *exec_path; int singlestep; @@ -632,6 +638,7 @@ int main(int argc, char **argv, char **envp) int execfd; int log_mask; unsigned long max_reserved_va; + bool preserve_argv0; error_init(argv[0]); module_call_init(MODULE_INIT_TRACE); @@ -688,6 +695,9 @@ int main(int argc, char **argv, char **envp) init_qemu_uname_release(); + /* + * Manage binfmt-misc open-binary flag + */ execfd = qemu_getauxval(AT_EXECFD); if (execfd == 0) { execfd = open(exec_path, O_RDONLY); @@ -697,6 +707,20 @@ int main(int argc, char **argv, char **envp) } } + /* + * get binfmt_misc flags + */ + preserve_argv0 = !!(qemu_getauxval(AT_FLAGS) & AT_FLAGS_PRESERVE_ARGV0); + + /* + * Manage binfmt-misc preserve-arg[0] flag + * argv[optind] full path to the binary + * argv[optind + 1] original argv[0] + */ + if (optind + 1 < argc && preserve_argv0) { + optind++; + } + if (cpu_model == NULL) { cpu_model = cpu_get_model(get_elf_eflags(execfd)); } diff --git a/linux-user/syscall.c b/linux-user/syscall.c index 9522f603aa..1e508576c7 100644 --- a/linux-user/syscall.c +++ b/linux-user/syscall.c @@ -7890,9 +7890,9 @@ static int open_self_maps(void *cpu_env, int fd) count = dprintf(fd, TARGET_ABI_FMT_ptr "-" TARGET_ABI_FMT_ptr " %c%c%c%c %08" PRIx64 " %s %"PRId64, h2g(min), h2g(max - 1) + 1, - e->is_read ? 'r' : '-', - e->is_write ? 'w' : '-', - e->is_exec ? 'x' : '-', + (flags & PAGE_READ) ? 'r' : '-', + (flags & PAGE_WRITE_ORG) ? 'w' : '-', + (flags & PAGE_EXEC) ? 'x' : '-', e->is_priv ? 'p' : '-', (uint64_t) e->offset, e->dev, e->inode); if (path) { |