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- /* -*- mode:c; c-file-style:"k&r"; c-basic-offset: 4; tab-width:4; indent-tabs-mode:nil; mode:auto-fill; fill-column:78; -*- */
- /* vim: set ts=4 sw=4 et tw=78 fo=cqt wm=0: */
- /*
- * This is for enclave to make ocalls to untrusted runtime.
- */
- #include "pal_linux.h"
- #include "pal_internal.h"
- #include "pal_debug.h"
- #include "enclave_ocalls.h"
- #include "ocall_types.h"
- #include "ecall_types.h"
- #include <api.h>
- #include <asm/errno.h>
- #define OCALLOC(val, type, len) do { \
- void * _tmp = sgx_ocalloc(len); \
- if (_tmp == NULL) { \
- OCALL_EXIT(); \
- return -PAL_ERROR_DENIED; /* TODO: remove this control-flow obfuscation */ \
- } \
- (val) = (type) _tmp; \
- } while (0)
- int printf(const char * fmt, ...);
- #define SGX_OCALL(code, ms) sgx_ocall(code, ms)
- #define OCALL_EXIT() \
- do { \
- sgx_ocfree(); \
- } while (0)
- #define ALLOC_IN_USER(ptr, size) \
- ({ \
- typeof(ptr) tmp = ptr; \
- if (sgx_is_within_enclave(ptr, size)) { \
- OCALLOC(tmp, typeof(tmp), size); \
- }; tmp; \
- })
- #define COPY_TO_USER(ptr, size) \
- ({ \
- typeof(ptr) tmp = ptr; \
- if (sgx_is_within_enclave(ptr, size)) { \
- OCALLOC(tmp, typeof(tmp), size); \
- memcpy((void *) tmp, ptr, size); \
- }; tmp; \
- })
- #define COPY_FROM_USER(var, user_var, size) \
- ({ \
- int _ret = 0; \
- if (var != user_var) { \
- if (sgx_is_within_enclave(user_var, size) || \
- !sgx_is_within_enclave(var, size)) { \
- _ret = -PAL_ERROR_DENIED; \
- } else { \
- _ret = 0; \
- memcpy(var, user_var, size); \
- } \
- } _ret; \
- })
- int ocall_exit(void)
- {
- int retval = 0;
- SGX_OCALL(OCALL_EXIT, NULL);
- /* never reach here */
- return retval;
- }
- int ocall_print_string (const char * str, unsigned int length)
- {
- int retval = 0;
- ms_ocall_print_string_t * ms;
- OCALLOC(ms, ms_ocall_print_string_t *, sizeof(*ms));
- if (!str || length <= 0) {
- OCALL_EXIT();
- return -PAL_ERROR_DENIED;
- }
- ms->ms_str = COPY_TO_USER(str, length);
- ms->ms_length = length;
- retval = SGX_OCALL(OCALL_PRINT_STRING, ms);
- OCALL_EXIT();
- return retval;
- }
- int ocall_alloc_untrusted (uint64_t size, void ** mem)
- {
- int retval = 0;
- ms_ocall_alloc_untrusted_t * ms;
- OCALLOC(ms, ms_ocall_alloc_untrusted_t *, sizeof(*ms));
- ms->ms_size = size;
- retval = SGX_OCALL(OCALL_ALLOC_UNTRUSTED, ms);
- if (!retval) {
- if (sgx_is_within_enclave(ms->ms_mem, size)) {
- OCALL_EXIT();
- return -PAL_ERROR_DENIED;
- }
- *mem = ms->ms_mem;
- }
- OCALL_EXIT();
- return retval;
- }
- int ocall_map_untrusted (int fd, uint64_t offset,
- uint64_t size, unsigned short prot,
- void ** mem)
- {
- int retval = 0;
- ms_ocall_map_untrusted_t * ms;
- OCALLOC(ms, ms_ocall_map_untrusted_t *, sizeof(*ms));
- ms->ms_fd = fd;
- ms->ms_offset = offset;
- ms->ms_size = size;
- ms->ms_prot = prot;
- retval = SGX_OCALL(OCALL_MAP_UNTRUSTED, ms);
- if (!retval) {
- if (sgx_is_within_enclave(ms->ms_mem, size)) {
- OCALL_EXIT();
- return -PAL_ERROR_DENIED;
- }
- *mem = ms->ms_mem;
- }
- OCALL_EXIT();
- return retval;
- }
- int ocall_unmap_untrusted (const void * mem, uint64_t size)
- {
- int retval = 0;
- if (sgx_is_within_enclave(mem, size)) {
- OCALL_EXIT();
- return -PAL_ERROR_INVAL;
- }
- ms_ocall_unmap_untrusted_t * ms;
- OCALLOC(ms, ms_ocall_unmap_untrusted_t *, sizeof(*ms));
- ms->ms_mem = mem;
- ms->ms_size = size;
- retval = SGX_OCALL(OCALL_UNMAP_UNTRUSTED, ms);
- OCALL_EXIT();
- return retval;
- }
- int ocall_cpuid (unsigned int leaf, unsigned int subleaf,
- unsigned int values[4])
- {
- int retval = 0;
- ms_ocall_cpuid_t * ms;
- OCALLOC(ms, ms_ocall_cpuid_t *, sizeof(*ms));
- ms->ms_leaf = leaf;
- ms->ms_subleaf = subleaf;
- retval = SGX_OCALL(OCALL_CPUID, ms);
- if (!retval) {
- values[0] = ms->ms_values[0];
- values[1] = ms->ms_values[1];
- values[2] = ms->ms_values[2];
- values[3] = ms->ms_values[3];
- }
- OCALL_EXIT();
- return retval;
- }
- int ocall_open (const char * pathname, int flags, unsigned short mode)
- {
- int retval = 0;
- int len = pathname ? strlen(pathname) + 1 : 0;
- ms_ocall_open_t * ms;
- OCALLOC(ms, ms_ocall_open_t *, sizeof(*ms));
- ms->ms_pathname = COPY_TO_USER(pathname, len);
- ms->ms_flags = flags;
- ms->ms_mode = mode;
- retval = SGX_OCALL(OCALL_OPEN, ms);
- OCALL_EXIT();
- return retval;
- }
- int ocall_close (int fd)
- {
- int retval = 0;
- ms_ocall_close_t *ms;
- OCALLOC(ms, ms_ocall_close_t *, sizeof(*ms));
- ms->ms_fd = fd;
- retval = SGX_OCALL(OCALL_CLOSE, ms);
- OCALL_EXIT();
- return retval;
- }
- int ocall_read (int fd, void * buf, unsigned int count)
- {
- int retval = 0;
- void * obuf = NULL;
- if (count > 4096) {
- retval = ocall_alloc_untrusted(ALLOC_ALIGNUP(count), &obuf);
- if (retval < 0)
- return retval;
- }
- ms_ocall_read_t * ms;
- OCALLOC(ms, ms_ocall_read_t *, sizeof(*ms));
- ms->ms_fd = fd;
- if (obuf)
- ms->ms_buf = obuf;
- else
- OCALLOC(ms->ms_buf, void *, count);
- ms->ms_count = count;
- retval = SGX_OCALL(OCALL_READ, ms);
- if (retval > 0)
- memcpy(buf, ms->ms_buf, retval);
- OCALL_EXIT();
- if (obuf)
- ocall_unmap_untrusted(obuf, ALLOC_ALIGNUP(count));
- return retval;
- }
- int ocall_write (int fd, const void * buf, unsigned int count)
- {
- int retval = 0;
- void * obuf = NULL;
- if (count > 4096) {
- retval = ocall_alloc_untrusted(ALLOC_ALIGNUP(count), &obuf);
- if (retval < 0)
- return retval;
- }
- ms_ocall_write_t * ms;
- OCALLOC(ms, ms_ocall_write_t *, sizeof(*ms));
- ms->ms_fd = fd;
- if (obuf) {
- ms->ms_buf = obuf;
- memcpy(obuf, buf, count);
- } else {
- ms->ms_buf = COPY_TO_USER(buf, count);
- }
- ms->ms_count = count;
- retval = SGX_OCALL(OCALL_WRITE, ms);
- OCALL_EXIT();
- if (obuf)
- ocall_unmap_untrusted(obuf, ALLOC_ALIGNUP(count));
- return retval;
- }
- int ocall_fstat (int fd, struct stat * buf)
- {
- int retval = 0;
- ms_ocall_fstat_t * ms;
- OCALLOC(ms, ms_ocall_fstat_t *, sizeof(*ms));
- ms->ms_fd = fd;
- retval = SGX_OCALL(OCALL_FSTAT, ms);
- if (!retval)
- memcpy(buf, &ms->ms_stat, sizeof(struct stat));
- OCALL_EXIT();
- return retval;
- }
- int ocall_fionread (int fd)
- {
- int retval = 0;
- ms_ocall_fionread_t * ms;
- OCALLOC(ms, ms_ocall_fionread_t *, sizeof(*ms));
- ms->ms_fd = fd;
- retval = SGX_OCALL(OCALL_FIONREAD, ms);
- OCALL_EXIT();
- return retval;
- }
- int ocall_fsetnonblock (int fd, int nonblocking)
- {
- int retval = 0;
- ms_ocall_fsetnonblock_t * ms;
- OCALLOC(ms, ms_ocall_fsetnonblock_t *, sizeof(*ms));
- ms->ms_fd = fd;
- ms->ms_nonblocking = nonblocking;
- retval = SGX_OCALL(OCALL_FSETNONBLOCK, ms);
- OCALL_EXIT();
- return retval;
- }
- int ocall_fchmod (int fd, unsigned short mode)
- {
- int retval = 0;
- ms_ocall_fchmod_t * ms;
- OCALLOC(ms, ms_ocall_fchmod_t *, sizeof(*ms));
- ms->ms_fd = fd;
- ms->ms_mode = mode;
- retval = SGX_OCALL(OCALL_FCHMOD, ms);
- OCALL_EXIT();
- return retval;
- }
- int ocall_fsync (int fd)
- {
- int retval = 0;
- ms_ocall_fsync_t * ms;
- OCALLOC(ms, ms_ocall_fsync_t *, sizeof(*ms));
- ms->ms_fd = fd;
- retval = SGX_OCALL(OCALL_FSYNC, ms);
- OCALL_EXIT();
- return retval;
- }
- int ocall_ftruncate (int fd, uint64_t length)
- {
- int retval = 0;
- ms_ocall_ftruncate_t * ms;
- OCALLOC(ms, ms_ocall_ftruncate_t *, sizeof(*ms));
- ms->ms_fd = fd;
- ms->ms_length = length;
- retval = SGX_OCALL(OCALL_FTRUNCATE, ms);
- OCALL_EXIT();
- return retval;
- }
- int ocall_mkdir (const char * pathname, unsigned short mode)
- {
- int retval = 0;
- int len = pathname ? strlen(pathname) + 1 : 0;
- ms_ocall_mkdir_t * ms;
- OCALLOC(ms, ms_ocall_mkdir_t *, sizeof(*ms));
- ms->ms_pathname = COPY_TO_USER(pathname, len);
- ms->ms_mode = mode;
- retval = SGX_OCALL(OCALL_MKDIR, ms);
- OCALL_EXIT();
- return retval;
- }
- int ocall_getdents (int fd, struct linux_dirent64 * dirp, unsigned int size)
- {
- int retval = 0;
- ms_ocall_getdents_t * ms;
- OCALLOC(ms, ms_ocall_getdents_t *, sizeof(*ms));
- ms->ms_fd = fd;
- ms->ms_dirp = ALLOC_IN_USER(dirp, size);
- ms->ms_size = size;
- retval = SGX_OCALL(OCALL_GETDENTS, ms);
- if (retval > 0)
- COPY_FROM_USER(dirp, ms->ms_dirp, retval);
- OCALL_EXIT();
- return retval;
- }
- int ocall_wake_thread (void * tcs)
- {
- return SGX_OCALL(OCALL_WAKE_THREAD, tcs);
- }
- int ocall_create_process (const char * uri,
- int nargs, const char ** args,
- int procfds[3],
- unsigned int * pid)
- {
- int retval = 0;
- int ulen = uri ? strlen(uri) + 1 : 0;
- ms_ocall_create_process_t * ms;
- OCALLOC(ms, ms_ocall_create_process_t *,
- sizeof(*ms) + sizeof(const char *) * nargs);
- ms->ms_uri = uri ? COPY_TO_USER(uri, ulen) : NULL;
- ms->ms_nargs = nargs;
- for (int i = 0 ; i < nargs ; i++) {
- int len = args[i] ? strlen(args[i]) + 1 : 0;
- ms->ms_args[i] = args[i] ? COPY_TO_USER(args[i], len) : NULL;
- }
- retval = SGX_OCALL(OCALL_CREATE_PROCESS, ms);
- if (!retval) {
- if (pid)
- *pid = ms->ms_pid;
- procfds[0] = ms->ms_proc_fds[0];
- procfds[1] = ms->ms_proc_fds[1];
- procfds[2] = ms->ms_proc_fds[2];
- }
- OCALL_EXIT();
- return retval;
- }
- int ocall_futex (int * futex, int op, int val,
- const uint64_t * timeout)
- {
- int retval = 0;
- ms_ocall_futex_t * ms;
- OCALLOC(ms, ms_ocall_futex_t *, sizeof(*ms));
- if (sgx_is_within_enclave(futex, sizeof(int))) {
- OCALL_EXIT();
- return -PAL_ERROR_INVAL;
- }
- ms->ms_futex = futex;
- ms->ms_op = op;
- ms->ms_val = val;
- ms->ms_timeout = timeout ? *timeout : OCALL_NO_TIMEOUT;
- retval = SGX_OCALL(OCALL_FUTEX, ms);
- OCALL_EXIT();
- return retval;
- }
- int ocall_socketpair (int domain, int type, int protocol,
- int sockfds[2])
- {
- int retval = 0;
- ms_ocall_socketpair_t * ms;
- OCALLOC(ms, ms_ocall_socketpair_t *, sizeof(*ms));
- ms->ms_domain = domain;
- ms->ms_type = type;
- ms->ms_protocol = protocol;
- retval = SGX_OCALL(OCALL_SOCKETPAIR, ms);
- if (!retval) {
- sockfds[0] = ms->ms_sockfds[0];
- sockfds[1] = ms->ms_sockfds[1];
- }
- OCALL_EXIT();
- return retval;
- }
- int ocall_sock_listen (int domain, int type, int protocol,
- struct sockaddr * addr, unsigned int * addrlen,
- struct sockopt * sockopt)
- {
- int retval = 0;
- unsigned int bind_len = *addrlen;
- ms_ocall_sock_listen_t * ms;
- OCALLOC(ms, ms_ocall_sock_listen_t *, sizeof(*ms));
- ms->ms_domain = domain;
- ms->ms_type = type;
- ms->ms_protocol = protocol;
- ms->ms_addr = COPY_TO_USER(addr, bind_len);
- ms->ms_addrlen = bind_len;
- retval = SGX_OCALL(OCALL_SOCK_LISTEN, ms);
- if (retval >= 0) {
- if (addrlen && (
- sgx_is_within_enclave(ms->ms_addr, bind_len) ||
- ms->ms_addrlen > bind_len)) {
- OCALL_EXIT();
- return -PAL_ERROR_DENIED;
- }
- if (addr) {
- COPY_FROM_USER(addr, ms->ms_addr, ms->ms_addrlen);
- *addrlen = ms->ms_addrlen;
- }
- if (sockopt)
- *sockopt = ms->ms_sockopt;
- }
- OCALL_EXIT();
- return retval;
- }
- int ocall_sock_accept (int sockfd, struct sockaddr * addr,
- unsigned int * addrlen, struct sockopt * sockopt)
- {
- int retval = 0;
- unsigned int len = addrlen ? *addrlen : 0;
- ms_ocall_sock_accept_t * ms;
- OCALLOC(ms, ms_ocall_sock_accept_t *, sizeof(*ms));
- ms->ms_sockfd = sockfd;
- ms->ms_addr = COPY_TO_USER(addr, len);
- ms->ms_addrlen = len;
- retval = SGX_OCALL(OCALL_SOCK_ACCEPT, ms);
- if (retval >= 0) {
- if (len && (sgx_is_within_enclave(ms->ms_addr, len) ||
- ms->ms_addrlen > len)) {
- OCALL_EXIT();
- return -PAL_ERROR_DENIED;
- }
- if (addr) {
- COPY_FROM_USER(addr, ms->ms_addr, ms->ms_addrlen);
- *addrlen = ms->ms_addrlen;
- }
- if (sockopt)
- *sockopt = ms->ms_sockopt;
- }
- OCALL_EXIT();
- return retval;
- }
- int ocall_sock_connect (int domain, int type, int protocol,
- const struct sockaddr * addr,
- unsigned int addrlen,
- struct sockaddr * bind_addr,
- unsigned int * bind_addrlen, struct sockopt * sockopt)
- {
- int retval = 0;
- unsigned int bind_len = bind_addrlen ? *bind_addrlen : 0;
- ms_ocall_sock_connect_t * ms;
- OCALLOC(ms, ms_ocall_sock_connect_t *, sizeof(*ms));
- ms->ms_domain = domain;
- ms->ms_type = type;
- ms->ms_protocol = protocol;
- ms->ms_addr = COPY_TO_USER(addr, addrlen);
- ms->ms_addrlen = addrlen;
- ms->ms_bind_addr = bind_addr ? COPY_TO_USER(bind_addr, bind_len) : NULL;
- ms->ms_bind_addrlen = bind_len;
- retval = SGX_OCALL(OCALL_SOCK_CONNECT, ms);
- if (retval >= 0) {
- if (bind_len && (
- sgx_is_within_enclave(ms->ms_bind_addr, bind_len) ||
- ms->ms_bind_addrlen > bind_len)) {
- OCALL_EXIT();
- return -PAL_ERROR_DENIED;
- }
- if (bind_addr) {
- COPY_FROM_USER(bind_addr, ms->ms_bind_addr,
- ms->ms_bind_addrlen);
- *bind_addrlen = ms->ms_bind_addrlen;
- }
- if (sockopt)
- *sockopt = ms->ms_sockopt;
- }
- OCALL_EXIT();
- return retval;
- }
- int ocall_sock_recv (int sockfd, void * buf, unsigned int count,
- struct sockaddr * addr, unsigned int * addrlen)
- {
- int retval = 0;
- unsigned int len = addrlen ? *addrlen : 0;
- ms_ocall_sock_recv_t * ms;
- OCALLOC(ms, ms_ocall_sock_recv_t *, sizeof(*ms));
- ms->ms_sockfd = sockfd;
- ms->ms_buf = ALLOC_IN_USER(buf, count);
- ms->ms_count = count;
- ms->ms_addr = addr ? ALLOC_IN_USER(addr, len) : NULL;
- ms->ms_addrlen = len;
- retval = SGX_OCALL(OCALL_SOCK_RECV, ms);
- if (retval >= 0) {
- if (len && (sgx_is_within_enclave(ms->ms_addr, len) ||
- ms->ms_addrlen > len)) {
- OCALL_EXIT();
- return -PAL_ERROR_DENIED;
- }
- COPY_FROM_USER(buf, ms->ms_buf, retval);
- COPY_FROM_USER(addr, ms->ms_addr, ms->ms_addrlen);
- if (addrlen)
- *addrlen = ms->ms_addrlen;
- }
- OCALL_EXIT();
- return retval;
- }
- int ocall_sock_send (int sockfd, const void * buf, unsigned int count,
- const struct sockaddr * addr, unsigned int addrlen)
- {
- int retval = 0;
- ms_ocall_sock_send_t * ms;
- OCALLOC(ms, ms_ocall_sock_send_t *, sizeof(*ms));
- ms->ms_sockfd = sockfd;
- ms->ms_buf = COPY_TO_USER(buf, count);
- ms->ms_count = count;
- ms->ms_addr = addr ? COPY_TO_USER(addr, addrlen) : NULL;
- ms->ms_addrlen = addrlen;
- retval = SGX_OCALL(OCALL_SOCK_SEND, ms);
- OCALL_EXIT();
- return retval;
- }
- int ocall_sock_recv_fd (int sockfd, void * buf, unsigned int count,
- unsigned int * fds, unsigned int * nfds)
- {
- int retval = 0;
- ms_ocall_sock_recv_fd_t * ms;
- OCALLOC(ms, ms_ocall_sock_recv_fd_t *, sizeof(*ms));
- ms->ms_sockfd = sockfd;
- ms->ms_buf = ALLOC_IN_USER(buf, count);
- ms->ms_count = count;
- ms->ms_fds = fds ? ALLOC_IN_USER(fds, sizeof(int) * (*nfds)) : NULL;
- ms->ms_nfds = *nfds;
- retval = SGX_OCALL(OCALL_SOCK_RECV_FD, ms);
- if (retval >= 0) {
- if (sgx_is_within_enclave(ms->ms_fds, sizeof(int) * (*nfds)) ||
- ms->ms_nfds > (*nfds)) {
- OCALL_EXIT();
- return -PAL_ERROR_DENIED;
- }
- COPY_FROM_USER(buf, ms->ms_buf, retval);
- COPY_FROM_USER(fds, ms->ms_fds, sizeof(int) * ms->ms_nfds);
- *nfds = ms->ms_nfds;
- }
- OCALL_EXIT();
- return retval;
- }
- int ocall_sock_send_fd (int sockfd, const void * buf, unsigned int count,
- const unsigned int * fds, unsigned int nfds)
- {
- int retval = 0;
- ms_ocall_sock_send_fd_t * ms;
- OCALLOC(ms, ms_ocall_sock_send_fd_t *, sizeof(*ms));
- ms->ms_sockfd = sockfd;
- ms->ms_buf = COPY_TO_USER(buf, count);
- ms->ms_count = count;
- ms->ms_fds = fds ? COPY_TO_USER(fds, sizeof(int) * nfds) : NULL;
- ms->ms_nfds = nfds;
- retval = SGX_OCALL(OCALL_SOCK_SEND_FD, ms);
- OCALL_EXIT();
- return retval;
- }
- int ocall_sock_setopt (int sockfd, int level, int optname,
- const void * optval, unsigned int optlen)
- {
- int retval = 0;
- ms_ocall_sock_setopt_t * ms;
- OCALLOC(ms, ms_ocall_sock_setopt_t *, sizeof(*ms));
- ms->ms_sockfd = sockfd;
- ms->ms_level = level;
- ms->ms_optname = optname;
- ms->ms_optval = COPY_TO_USER(optval, optlen);
- ms->ms_optlen = optlen;
- retval = SGX_OCALL(OCALL_SOCK_SETOPT, ms);
- OCALL_EXIT();
- return retval;
- }
- int ocall_sock_shutdown (int sockfd, int how)
- {
- int retval = 0;
- ms_ocall_sock_shutdown_t * ms;
- OCALLOC(ms, ms_ocall_sock_shutdown_t *, sizeof(*ms));
- ms->ms_sockfd = sockfd;
- ms->ms_how = how;
- retval = SGX_OCALL(OCALL_SOCK_SHUTDOWN, ms);
- OCALL_EXIT();
- return retval;
- }
- int ocall_gettime (unsigned long * microsec)
- {
- int retval = 0;
- ms_ocall_gettime_t * ms;
- OCALLOC(ms, ms_ocall_gettime_t *, sizeof(*ms));
- retval = SGX_OCALL(OCALL_GETTIME, ms);
- if (!retval)
- *microsec = ms->ms_microsec;
- OCALL_EXIT();
- return retval;
- }
- int ocall_sleep (unsigned long * microsec)
- {
- int retval = 0;
- ms_ocall_sleep_t * ms;
- OCALLOC(ms, ms_ocall_sleep_t *, sizeof(*ms));
- ms->ms_microsec = microsec ? *microsec : 0;
- retval = SGX_OCALL(OCALL_SLEEP, ms);
- if (microsec) {
- if (!retval)
- *microsec = 0;
- else if (retval == -EINTR)
- *microsec = ms->ms_microsec;
- }
- OCALL_EXIT();
- return retval;
- }
- int ocall_poll (struct pollfd * fds, int nfds, uint64_t * timeout)
- {
- int retval = 0;
- ms_ocall_poll_t * ms;
- OCALLOC(ms, ms_ocall_poll_t *, sizeof(*ms));
- ms->ms_fds = COPY_TO_USER(fds, sizeof(struct pollfd) * nfds);
- ms->ms_nfds = nfds;
- ms->ms_timeout = timeout ? *timeout : OCALL_NO_TIMEOUT;
- retval = SGX_OCALL(OCALL_POLL, ms);
- if (retval == -EINTR && timeout)
- *timeout = ms->ms_timeout;
- if (retval >= 0)
- COPY_FROM_USER(fds, ms->ms_fds, sizeof(struct pollfd) * nfds);
- OCALL_EXIT();
- return retval;
- }
- int ocall_rename (const char * oldpath, const char * newpath)
- {
- int retval = 0;
- int oldlen = oldpath ? strlen(oldpath) + 1 : 0;
- int newlen = newpath ? strlen(newpath) + 1 : 0;
- ms_ocall_rename_t * ms;
- OCALLOC(ms, ms_ocall_rename_t *, sizeof(*ms));
- ms->ms_oldpath = COPY_TO_USER(oldpath, oldlen);
- ms->ms_newpath = COPY_TO_USER(newpath, newlen);
- retval = SGX_OCALL(OCALL_RENAME, ms);
- OCALL_EXIT();
- return retval;
- }
- int ocall_delete (const char * pathname)
- {
- int retval = 0;
- int len = pathname ? strlen(pathname) + 1 : 0;
- ms_ocall_delete_t * ms;
- OCALLOC(ms, ms_ocall_delete_t *, sizeof(*ms));
- ms->ms_pathname = COPY_TO_USER(pathname, len);
- retval = SGX_OCALL(OCALL_DELETE, ms);
- OCALL_EXIT();
- return retval;
- }
- int ocall_load_debug(const char * command)
- {
- int retval = 0;
- int len = strlen(command);
- const char * ms = COPY_TO_USER(command, len + 1);
- retval = SGX_OCALL(OCALL_LOAD_DEBUG, (void *) ms);
- OCALL_EXIT();
- return retval;
- }
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