diff options
Diffstat (limited to 'linux-user/syscall.c')
| -rw-r--r-- | linux-user/syscall.c | 126 |
1 files changed, 117 insertions, 9 deletions
diff --git a/linux-user/syscall.c b/linux-user/syscall.c index ffc11de4b7..366b6951e9 100644 --- a/linux-user/syscall.c +++ b/linux-user/syscall.c @@ -43,6 +43,7 @@ #include <sys/resource.h> #include <sys/mman.h> #include <sys/swap.h> +#include <linux/capability.h> #include <signal.h> #include <sched.h> #ifdef __ia64__ @@ -243,6 +244,10 @@ _syscall3(int, sys_sched_setaffinity, pid_t, pid, unsigned int, len, unsigned long *, user_mask_ptr); _syscall4(int, reboot, int, magic1, int, magic2, unsigned int, cmd, void *, arg); +_syscall2(int, capget, struct __user_cap_header_struct *, header, + struct __user_cap_data_struct *, data); +_syscall2(int, capset, struct __user_cap_header_struct *, header, + struct __user_cap_data_struct *, data); static bitmask_transtbl fcntl_flags_tbl[] = { { TARGET_O_ACCMODE, TARGET_O_WRONLY, O_ACCMODE, O_WRONLY, }, @@ -4421,6 +4426,14 @@ static int target_to_host_fcntl_cmd(int cmd) #endif case TARGET_F_NOTIFY: return F_NOTIFY; +#ifdef F_GETOWN_EX + case TARGET_F_GETOWN_EX: + return F_GETOWN_EX; +#endif +#ifdef F_SETOWN_EX + case TARGET_F_SETOWN_EX: + return F_SETOWN_EX; +#endif default: return -TARGET_EINVAL; } @@ -4443,6 +4456,10 @@ static abi_long do_fcntl(int fd, int cmd, abi_ulong arg) struct target_flock *target_fl; struct flock64 fl64; struct target_flock64 *target_fl64; +#ifdef F_GETOWN_EX + struct f_owner_ex fox; + struct target_f_owner_ex *target_fox; +#endif abi_long ret; int host_cmd = target_to_host_fcntl_cmd(cmd); @@ -4536,6 +4553,30 @@ static abi_long do_fcntl(int fd, int cmd, abi_ulong arg) ret = get_errno(fcntl(fd, host_cmd, target_to_host_bitmask(arg, fcntl_flags_tbl))); break; +#ifdef F_GETOWN_EX + case TARGET_F_GETOWN_EX: + ret = get_errno(fcntl(fd, host_cmd, &fox)); + if (ret >= 0) { + if (!lock_user_struct(VERIFY_WRITE, target_fox, arg, 0)) + return -TARGET_EFAULT; + target_fox->type = tswap32(fox.type); + target_fox->pid = tswap32(fox.pid); + unlock_user_struct(target_fox, arg, 1); + } + break; +#endif + +#ifdef F_SETOWN_EX + case TARGET_F_SETOWN_EX: + if (!lock_user_struct(VERIFY_READ, target_fox, arg, 1)) + return -TARGET_EFAULT; + fox.type = tswap32(target_fox->type); + fox.pid = tswap32(target_fox->pid); + unlock_user_struct(target_fox, arg, 0); + ret = get_errno(fcntl(fd, host_cmd, &fox)); + break; +#endif + case TARGET_F_SETOWN: case TARGET_F_GETOWN: case TARGET_F_SETSIG: @@ -5993,7 +6034,7 @@ abi_long do_syscall(void *cpu_env, int num, abi_long arg1, { sigset_t cur_set; abi_ulong target_set; - sigprocmask(0, NULL, &cur_set); + do_sigprocmask(0, NULL, &cur_set); host_to_target_old_sigset(&target_set, &cur_set); ret = target_set; } @@ -6004,10 +6045,10 @@ abi_long do_syscall(void *cpu_env, int num, abi_long arg1, { sigset_t set, oset, cur_set; abi_ulong target_set = arg1; - sigprocmask(0, NULL, &cur_set); + do_sigprocmask(0, NULL, &cur_set); target_to_host_old_sigset(&set, &target_set); sigorset(&set, &set, &cur_set); - sigprocmask(SIG_SETMASK, &set, &oset); + do_sigprocmask(SIG_SETMASK, &set, &oset); host_to_target_old_sigset(&target_set, &oset); ret = target_set; } @@ -6038,7 +6079,7 @@ abi_long do_syscall(void *cpu_env, int num, abi_long arg1, mask = arg2; target_to_host_old_sigset(&set, &mask); - ret = get_errno(sigprocmask(how, &set, &oldset)); + ret = get_errno(do_sigprocmask(how, &set, &oldset)); if (!is_error(ret)) { host_to_target_old_sigset(&mask, &oldset); ret = mask; @@ -6072,7 +6113,7 @@ abi_long do_syscall(void *cpu_env, int num, abi_long arg1, how = 0; set_ptr = NULL; } - ret = get_errno(sigprocmask(how, set_ptr, &oldset)); + ret = get_errno(do_sigprocmask(how, set_ptr, &oldset)); if (!is_error(ret) && arg3) { if (!(p = lock_user(VERIFY_WRITE, arg3, sizeof(target_sigset_t), 0))) goto efault; @@ -6112,7 +6153,7 @@ abi_long do_syscall(void *cpu_env, int num, abi_long arg1, how = 0; set_ptr = NULL; } - ret = get_errno(sigprocmask(how, set_ptr, &oldset)); + ret = get_errno(do_sigprocmask(how, set_ptr, &oldset)); if (!is_error(ret) && arg3) { if (!(p = lock_user(VERIFY_WRITE, arg3, sizeof(target_sigset_t), 0))) goto efault; @@ -7641,9 +7682,75 @@ abi_long do_syscall(void *cpu_env, int num, abi_long arg1, unlock_user(p, arg1, ret); break; case TARGET_NR_capget: - goto unimplemented; case TARGET_NR_capset: - goto unimplemented; + { + struct target_user_cap_header *target_header; + struct target_user_cap_data *target_data = NULL; + struct __user_cap_header_struct header; + struct __user_cap_data_struct data[2]; + struct __user_cap_data_struct *dataptr = NULL; + int i, target_datalen; + int data_items = 1; + + if (!lock_user_struct(VERIFY_WRITE, target_header, arg1, 1)) { + goto efault; + } + header.version = tswap32(target_header->version); + header.pid = tswap32(target_header->pid); + + if (header.version != _LINUX_CAPABILITY_VERSION_1) { + /* Version 2 and up takes pointer to two user_data structs */ + data_items = 2; + } + + target_datalen = sizeof(*target_data) * data_items; + + if (arg2) { + if (num == TARGET_NR_capget) { + target_data = lock_user(VERIFY_WRITE, arg2, target_datalen, 0); + } else { + target_data = lock_user(VERIFY_READ, arg2, target_datalen, 1); + } + if (!target_data) { + unlock_user_struct(target_header, arg1, 0); + goto efault; + } + + if (num == TARGET_NR_capset) { + for (i = 0; i < data_items; i++) { + data[i].effective = tswap32(target_data[i].effective); + data[i].permitted = tswap32(target_data[i].permitted); + data[i].inheritable = tswap32(target_data[i].inheritable); + } + } + + dataptr = data; + } + + if (num == TARGET_NR_capget) { + ret = get_errno(capget(&header, dataptr)); + } else { + ret = get_errno(capset(&header, dataptr)); + } + + /* The kernel always updates version for both capget and capset */ + target_header->version = tswap32(header.version); + unlock_user_struct(target_header, arg1, 1); + + if (arg2) { + if (num == TARGET_NR_capget) { + for (i = 0; i < data_items; i++) { + target_data[i].effective = tswap32(data[i].effective); + target_data[i].permitted = tswap32(data[i].permitted); + target_data[i].inheritable = tswap32(data[i].inheritable); + } + unlock_user(target_data, arg2, target_datalen); + } else { + unlock_user(target_data, arg2, 0); + } + } + break; + } case TARGET_NR_sigaltstack: #if defined(TARGET_I386) || defined(TARGET_ARM) || defined(TARGET_MIPS) || \ defined(TARGET_SPARC) || defined(TARGET_PPC) || defined(TARGET_ALPHA) || \ @@ -8125,7 +8232,7 @@ abi_long do_syscall(void *cpu_env, int num, abi_long arg1, } mask = arg2; target_to_host_old_sigset(&set, &mask); - sigprocmask(how, &set, &oldset); + do_sigprocmask(how, &set, &oldset); host_to_target_old_sigset(&mask, &oldset); ret = mask; } @@ -9148,6 +9255,7 @@ abi_long do_syscall(void *cpu_env, int num, abi_long arg1, case TARGET_NR_atomic_barrier: { /* Like the kernel implementation and the qemu arm barrier, no-op this? */ + ret = 0; break; } #endif |