diff options
| -rw-r--r-- | linux-user/syscall.c | 30 |
1 files changed, 30 insertions, 0 deletions
diff --git a/linux-user/syscall.c b/linux-user/syscall.c index 5a5fdac1e6..c6bfcd8815 100644 --- a/linux-user/syscall.c +++ b/linux-user/syscall.c @@ -4639,6 +4639,35 @@ static int open_self_stat(void *cpu_env, int fd) return 0; } +static int open_self_auxv(void *cpu_env, int fd) +{ + TaskState *ts = ((CPUState *)cpu_env)->opaque; + abi_ulong auxv = ts->info->saved_auxv; + abi_ulong len = ts->info->auxv_len; + char *ptr; + + /* + * Auxiliary vector is stored in target process stack. + * read in whole auxv vector and copy it to file + */ + ptr = lock_user(VERIFY_READ, auxv, len, 0); + if (ptr != NULL) { + while (len > 0) { + ssize_t r; + r = write(fd, ptr, len); + if (r <= 0) { + break; + } + len -= r; + ptr += r; + } + lseek(fd, 0, SEEK_SET); + unlock_user(ptr, auxv, len); + } + + return 0; +} + static int do_open(void *cpu_env, const char *pathname, int flags, mode_t mode) { struct fake_open { @@ -4649,6 +4678,7 @@ static int do_open(void *cpu_env, const char *pathname, int flags, mode_t mode) static const struct fake_open fakes[] = { { "/proc/self/maps", open_self_maps }, { "/proc/self/stat", open_self_stat }, + { "/proc/self/auxv", open_self_auxv }, { NULL, NULL } }; |