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bsd-user: Next round of syscalls
Implement the next round of system calls. These are open, openat, close, fdatasync, fsync, close_from, revoke, access, eacccess, facccessat, chdir, fchdir, rename, renameat, mkdir, mkdirat, rmdir, _getcwd, dup, dup2, truncate, ftruncate, acct and sync. In addition, the helper functions needed for these to work are included. With the helper functions, all of these system calls are the 'obvious' wrapper... -----BEGIN PGP SIGNATURE----- Comment: GPGTools - https://gpgtools.org iQIzBAABCgAdFiEEIDX4lLAKo898zeG3bBzRKH2wEQAFAmKvZSwACgkQbBzRKH2w EQCrdxAA0UeXmh/l1znPSrX4lif7Vhe4H5TdmHavGQX0p7B+dMd160SMLfKFJt7J HHXuQZbPFNuwqE5qiFPTcXIFjT5tq2WSjd9ZC/ZexfzBJIICwcUWuWvG2WfCA3fD hth/Ru2fX0vUwoUwvYw7lTPnhb9o52Z1rf5AEFu85E3UjKWEcARHCakm7n8a+Cg+ PkF1qZ/qFic+bkBZkZLWyHB5qR2p2sIp+VHwlG1ew39Xim457kynQOoF8etIXc1Y g5PrjePUsVhPR7qm4CFplM4UOyGOOqIykHERppaXKtk2+kP8dp9HWog9Z/IFVOKc z3huDtf03UtmohjdJBYkpCcCzmd2EETRPgkFaVT5ciVGMb3Nom1b2/DOnndpS9qb TdE7J6Ek1vp4Mr386QHzm6AfdoHGZc4tH+SpDQZrsWbnugklYnQd3++GCqj8D2rA LJ8oWInviZP8xWDn5q1sXCNw/lgVup9ZNrMl7TcXmQDZXHSW1tElIAT2PZCebman rSwg/umr7fPOXdIAkLhF77bAt3J3kAzxhuYwHEstB3kRXEJ2VinLMf3BJBrGLnuK kr6kJy6hw7luIT5nUNLrrNtwsAAwEu6S7OSGhEiGaUSIhiER96k/tX2u/KOBtwGC VzIP7vK5V2xYPepyj4tXkVRHkjxxw3s8fYRXf73IsaZ6Avot8pg= =JmJY -----END PGP SIGNATURE----- Merge tag 'bsd-user-syscall-2022q2-pull-request' of ssh://github.com/qemu-bsd-user/qemu-bsd-user into staging bsd-user: Next round of syscalls Implement the next round of system calls. These are open, openat, close, fdatasync, fsync, close_from, revoke, access, eacccess, facccessat, chdir, fchdir, rename, renameat, mkdir, mkdirat, rmdir, _getcwd, dup, dup2, truncate, ftruncate, acct and sync. In addition, the helper functions needed for these to work are included. With the helper functions, all of these system calls are the 'obvious' wrapper... # -----BEGIN PGP SIGNATURE----- # Comment: GPGTools - https://gpgtools.org # # iQIzBAABCgAdFiEEIDX4lLAKo898zeG3bBzRKH2wEQAFAmKvZSwACgkQbBzRKH2w # EQCrdxAA0UeXmh/l1znPSrX4lif7Vhe4H5TdmHavGQX0p7B+dMd160SMLfKFJt7J # HHXuQZbPFNuwqE5qiFPTcXIFjT5tq2WSjd9ZC/ZexfzBJIICwcUWuWvG2WfCA3fD # hth/Ru2fX0vUwoUwvYw7lTPnhb9o52Z1rf5AEFu85E3UjKWEcARHCakm7n8a+Cg+ # PkF1qZ/qFic+bkBZkZLWyHB5qR2p2sIp+VHwlG1ew39Xim457kynQOoF8etIXc1Y # g5PrjePUsVhPR7qm4CFplM4UOyGOOqIykHERppaXKtk2+kP8dp9HWog9Z/IFVOKc # z3huDtf03UtmohjdJBYkpCcCzmd2EETRPgkFaVT5ciVGMb3Nom1b2/DOnndpS9qb # TdE7J6Ek1vp4Mr386QHzm6AfdoHGZc4tH+SpDQZrsWbnugklYnQd3++GCqj8D2rA # LJ8oWInviZP8xWDn5q1sXCNw/lgVup9ZNrMl7TcXmQDZXHSW1tElIAT2PZCebman # rSwg/umr7fPOXdIAkLhF77bAt3J3kAzxhuYwHEstB3kRXEJ2VinLMf3BJBrGLnuK # kr6kJy6hw7luIT5nUNLrrNtwsAAwEu6S7OSGhEiGaUSIhiER96k/tX2u/KOBtwGC # VzIP7vK5V2xYPepyj4tXkVRHkjxxw3s8fYRXf73IsaZ6Avot8pg= # =JmJY # -----END PGP SIGNATURE----- # gpg: Signature made Sun 19 Jun 2022 11:04:28 AM PDT # gpg: using RSA key 2035F894B00AA3CF7CCDE1B76C1CD1287DB01100 # gpg: Good signature from "Warner Losh <wlosh@netflix.com>" [unknown] # gpg: aka "Warner Losh <imp@bsdimp.com>" [unknown] # gpg: aka "Warner Losh <imp@freebsd.org>" [unknown] # gpg: aka "Warner Losh <imp@village.org>" [unknown] # gpg: aka "Warner Losh <wlosh@bsdimp.com>" [unknown] # gpg: WARNING: This key is not certified with a trusted signature! # gpg: There is no indication that the signature belongs to the owner. # Primary key fingerprint: 2035 F894 B00A A3CF 7CCD E1B7 6C1C D128 7DB0 1100 * tag 'bsd-user-syscall-2022q2-pull-request' of ssh://github.com/qemu-bsd-user/qemu-bsd-user: bsd-user: Implement acct and sync bsd-user: Implement trunctate and ftruncate bsd-user: Implement dup and dup2 bsd-user: Implement rmdir and undocumented __getcwd bsd-user: Implement mkdir and mkdirat bsd-user: Implement link, linkat, unlink and unlinkat bsd-user: Implement rename and renameat bsd-user: Implement chdir and fchdir bsd-user: Implement revoke, access, eaccess and faccessat bsd-user: Implement fdatasync, fsync and close_from bsd-user: Implement open, openat and close Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
This commit is contained in:
Richard Henderson
commit
c8b2d41376
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@ -22,11 +22,43 @@
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#include "qemu/path.h"
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#define LOCK_PATH(p, arg) \
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do { \
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(p) = lock_user_string(arg); \
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if ((p) == NULL) { \
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return -TARGET_EFAULT; \
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} \
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} while (0)
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#define UNLOCK_PATH(p, arg) unlock_user(p, arg, 0)
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#define LOCK_PATH2(p1, arg1, p2, arg2) \
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do { \
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(p1) = lock_user_string(arg1); \
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if ((p1) == NULL) { \
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return -TARGET_EFAULT; \
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} \
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(p2) = lock_user_string(arg2); \
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if ((p2) == NULL) { \
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unlock_user(p1, arg1, 0); \
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return -TARGET_EFAULT; \
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} \
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} while (0)
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#define UNLOCK_PATH2(p1, arg1, p2, arg2) \
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do { \
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unlock_user(p2, arg2, 0); \
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unlock_user(p1, arg1, 0); \
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} while (0)
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extern struct iovec *lock_iovec(int type, abi_ulong target_addr, int count,
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int copy);
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extern void unlock_iovec(struct iovec *vec, abi_ulong target_addr, int count,
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int copy);
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int safe_open(const char *path, int flags, mode_t mode);
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int safe_openat(int fd, const char *path, int flags, mode_t mode);
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ssize_t safe_read(int fd, void *buf, size_t nbytes);
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ssize_t safe_pread(int fd, void *buf, size_t nbytes, off_t offset);
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ssize_t safe_readv(int fd, const struct iovec *iov, int iovcnt);
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@ -190,4 +222,331 @@ static abi_long do_bsd_pwritev(void *cpu_env, abi_long arg1,
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return ret;
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}
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/* open(2) */
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static abi_long do_bsd_open(abi_long arg1, abi_long arg2, abi_long arg3)
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{
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abi_long ret;
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void *p;
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LOCK_PATH(p, arg1);
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ret = get_errno(safe_open(path(p), target_to_host_bitmask(arg2,
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fcntl_flags_tbl), arg3));
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UNLOCK_PATH(p, arg1);
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return ret;
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}
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/* openat(2) */
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static abi_long do_bsd_openat(abi_long arg1, abi_long arg2,
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abi_long arg3, abi_long arg4)
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{
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abi_long ret;
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void *p;
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LOCK_PATH(p, arg2);
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ret = get_errno(safe_openat(arg1, path(p),
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target_to_host_bitmask(arg3, fcntl_flags_tbl), arg4));
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UNLOCK_PATH(p, arg2);
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return ret;
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}
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/* close(2) */
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static inline abi_long do_bsd_close(abi_long arg1)
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{
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return get_errno(close(arg1));
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}
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/* fdatasync(2) */
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static abi_long do_bsd_fdatasync(abi_long arg1)
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{
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return get_errno(fdatasync(arg1));
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}
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/* fsync(2) */
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static abi_long do_bsd_fsync(abi_long arg1)
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{
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return get_errno(fsync(arg1));
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}
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/* closefrom(2) */
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static abi_long do_bsd_closefrom(abi_long arg1)
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{
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closefrom(arg1); /* returns void */
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return get_errno(0);
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}
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/* revoke(2) */
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static abi_long do_bsd_revoke(abi_long arg1)
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{
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abi_long ret;
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void *p;
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LOCK_PATH(p, arg1);
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ret = get_errno(revoke(p)); /* XXX path(p)? */
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UNLOCK_PATH(p, arg1);
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return ret;
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}
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/* access(2) */
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static abi_long do_bsd_access(abi_long arg1, abi_long arg2)
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{
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abi_long ret;
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void *p;
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LOCK_PATH(p, arg1);
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ret = get_errno(access(path(p), arg2));
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UNLOCK_PATH(p, arg1);
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return ret;
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}
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/* eaccess(2) */
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static abi_long do_bsd_eaccess(abi_long arg1, abi_long arg2)
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{
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abi_long ret;
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void *p;
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LOCK_PATH(p, arg1);
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ret = get_errno(eaccess(path(p), arg2));
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UNLOCK_PATH(p, arg1);
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return ret;
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}
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/* faccessat(2) */
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static abi_long do_bsd_faccessat(abi_long arg1, abi_long arg2,
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abi_long arg3, abi_long arg4)
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{
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abi_long ret;
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void *p;
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LOCK_PATH(p, arg2);
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ret = get_errno(faccessat(arg1, p, arg3, arg4)); /* XXX path(p)? */
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UNLOCK_PATH(p, arg2);
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return ret;
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}
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/* chdir(2) */
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static abi_long do_bsd_chdir(abi_long arg1)
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{
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abi_long ret;
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void *p;
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LOCK_PATH(p, arg1);
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ret = get_errno(chdir(p)); /* XXX path(p)? */
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UNLOCK_PATH(p, arg1);
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return ret;
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}
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/* fchdir(2) */
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static abi_long do_bsd_fchdir(abi_long arg1)
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{
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return get_errno(fchdir(arg1));
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}
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/* rename(2) */
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static abi_long do_bsd_rename(abi_long arg1, abi_long arg2)
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{
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abi_long ret;
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void *p1, *p2;
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LOCK_PATH2(p1, arg1, p2, arg2);
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ret = get_errno(rename(p1, p2)); /* XXX path(p1), path(p2) */
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UNLOCK_PATH2(p1, arg1, p2, arg2);
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return ret;
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}
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/* renameat(2) */
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static abi_long do_bsd_renameat(abi_long arg1, abi_long arg2,
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abi_long arg3, abi_long arg4)
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{
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abi_long ret;
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void *p1, *p2;
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LOCK_PATH2(p1, arg2, p2, arg4);
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ret = get_errno(renameat(arg1, p1, arg3, p2));
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UNLOCK_PATH2(p1, arg2, p2, arg4);
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return ret;
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}
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/* link(2) */
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static abi_long do_bsd_link(abi_long arg1, abi_long arg2)
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{
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abi_long ret;
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void *p1, *p2;
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LOCK_PATH2(p1, arg1, p2, arg2);
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ret = get_errno(link(p1, p2)); /* XXX path(p1), path(p2) */
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UNLOCK_PATH2(p1, arg1, p2, arg2);
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return ret;
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}
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/* linkat(2) */
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static abi_long do_bsd_linkat(abi_long arg1, abi_long arg2,
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abi_long arg3, abi_long arg4, abi_long arg5)
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{
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abi_long ret;
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void *p1, *p2;
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LOCK_PATH2(p1, arg2, p2, arg4);
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ret = get_errno(linkat(arg1, p1, arg3, p2, arg5));
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UNLOCK_PATH2(p1, arg2, p2, arg4);
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return ret;
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}
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/* unlink(2) */
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static abi_long do_bsd_unlink(abi_long arg1)
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{
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abi_long ret;
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void *p;
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LOCK_PATH(p, arg1);
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ret = get_errno(unlink(p)); /* XXX path(p) */
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UNLOCK_PATH(p, arg1);
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return ret;
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}
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/* unlinkat(2) */
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static abi_long do_bsd_unlinkat(abi_long arg1, abi_long arg2,
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abi_long arg3)
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{
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abi_long ret;
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void *p;
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LOCK_PATH(p, arg2);
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ret = get_errno(unlinkat(arg1, p, arg3)); /* XXX path(p) */
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UNLOCK_PATH(p, arg2);
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return ret;
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}
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/* mkdir(2) */
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static abi_long do_bsd_mkdir(abi_long arg1, abi_long arg2)
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{
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abi_long ret;
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void *p;
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LOCK_PATH(p, arg1);
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ret = get_errno(mkdir(p, arg2)); /* XXX path(p) */
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UNLOCK_PATH(p, arg1);
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return ret;
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}
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/* mkdirat(2) */
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static abi_long do_bsd_mkdirat(abi_long arg1, abi_long arg2,
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abi_long arg3)
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{
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abi_long ret;
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void *p;
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LOCK_PATH(p, arg2);
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ret = get_errno(mkdirat(arg1, p, arg3));
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UNLOCK_PATH(p, arg2);
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return ret;
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}
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/* rmdir(2) */
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static abi_long do_bsd_rmdir(abi_long arg1)
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{
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abi_long ret;
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void *p;
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LOCK_PATH(p, arg1);
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ret = get_errno(rmdir(p)); /* XXX path(p)? */
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UNLOCK_PATH(p, arg1);
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return ret;
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}
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/* undocumented __getcwd(char *buf, size_t len) system call */
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static abi_long do_bsd___getcwd(abi_long arg1, abi_long arg2)
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{
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abi_long ret;
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void *p;
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p = lock_user(VERIFY_WRITE, arg1, arg2, 0);
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if (p == NULL) {
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return -TARGET_EFAULT;
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}
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ret = safe_syscall(SYS___getcwd, p, arg2);
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unlock_user(p, arg1, ret == 0 ? strlen(p) + 1 : 0);
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return get_errno(ret);
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}
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/* dup(2) */
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static abi_long do_bsd_dup(abi_long arg1)
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{
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return get_errno(dup(arg1));
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}
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/* dup2(2) */
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static abi_long do_bsd_dup2(abi_long arg1, abi_long arg2)
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{
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return get_errno(dup2(arg1, arg2));
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}
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/* truncate(2) */
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static abi_long do_bsd_truncate(void *cpu_env, abi_long arg1,
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abi_long arg2, abi_long arg3, abi_long arg4)
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{
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abi_long ret;
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void *p;
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LOCK_PATH(p, arg1);
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if (regpairs_aligned(cpu_env) != 0) {
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arg2 = arg3;
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arg3 = arg4;
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}
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ret = get_errno(truncate(p, target_arg64(arg2, arg3)));
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UNLOCK_PATH(p, arg1);
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return ret;
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}
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/* ftruncate(2) */
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static abi_long do_bsd_ftruncate(void *cpu_env, abi_long arg1,
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abi_long arg2, abi_long arg3, abi_long arg4)
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{
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if (regpairs_aligned(cpu_env) != 0) {
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arg2 = arg3;
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arg3 = arg4;
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}
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return get_errno(ftruncate(arg1, target_arg64(arg2, arg3)));
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}
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/* acct(2) */
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static abi_long do_bsd_acct(abi_long arg1)
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{
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abi_long ret;
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void *p;
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if (arg1 == 0) {
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ret = get_errno(acct(NULL));
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} else {
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LOCK_PATH(p, arg1);
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ret = get_errno(acct(path(p)));
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UNLOCK_PATH(p, arg1);
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}
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return ret;
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}
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/* sync(2) */
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static abi_long do_bsd_sync(void)
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{
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sync();
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return 0;
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}
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#endif /* BSD_FILE_H */
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@ -44,6 +44,10 @@
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#include "bsd-proc.h"
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/* I/O */
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safe_syscall3(int, open, const char *, path, int, flags, mode_t, mode);
|
||||
safe_syscall4(int, openat, int, fd, const char *, path, int, flags, mode_t,
|
||||
mode);
|
||||
|
||||
safe_syscall3(ssize_t, read, int, fd, void *, buf, size_t, nbytes);
|
||||
safe_syscall4(ssize_t, pread, int, fd, void *, buf, size_t, nbytes, off_t,
|
||||
offset);
|
||||
|
|
@ -257,6 +261,118 @@ static abi_long freebsd_syscall(void *cpu_env, int num, abi_long arg1,
|
|||
ret = do_bsd_pwritev(cpu_env, arg1, arg2, arg3, arg4, arg5, arg6);
|
||||
break;
|
||||
|
||||
case TARGET_FREEBSD_NR_open: /* open(2) */
|
||||
ret = do_bsd_open(arg1, arg2, arg3);
|
||||
break;
|
||||
|
||||
case TARGET_FREEBSD_NR_openat: /* openat(2) */
|
||||
ret = do_bsd_openat(arg1, arg2, arg3, arg4);
|
||||
break;
|
||||
|
||||
case TARGET_FREEBSD_NR_close: /* close(2) */
|
||||
ret = do_bsd_close(arg1);
|
||||
break;
|
||||
|
||||
case TARGET_FREEBSD_NR_fdatasync: /* fdatasync(2) */
|
||||
ret = do_bsd_fdatasync(arg1);
|
||||
break;
|
||||
|
||||
case TARGET_FREEBSD_NR_fsync: /* fsync(2) */
|
||||
ret = do_bsd_fsync(arg1);
|
||||
break;
|
||||
|
||||
case TARGET_FREEBSD_NR_freebsd12_closefrom: /* closefrom(2) */
|
||||
ret = do_bsd_closefrom(arg1);
|
||||
break;
|
||||
|
||||
case TARGET_FREEBSD_NR_revoke: /* revoke(2) */
|
||||
ret = do_bsd_revoke(arg1);
|
||||
break;
|
||||
|
||||
case TARGET_FREEBSD_NR_access: /* access(2) */
|
||||
ret = do_bsd_access(arg1, arg2);
|
||||
break;
|
||||
|
||||
case TARGET_FREEBSD_NR_eaccess: /* eaccess(2) */
|
||||
ret = do_bsd_eaccess(arg1, arg2);
|
||||
break;
|
||||
|
||||
case TARGET_FREEBSD_NR_faccessat: /* faccessat(2) */
|
||||
ret = do_bsd_faccessat(arg1, arg2, arg3, arg4);
|
||||
break;
|
||||
|
||||
case TARGET_FREEBSD_NR_chdir: /* chdir(2) */
|
||||
ret = do_bsd_chdir(arg1);
|
||||
break;
|
||||
|
||||
case TARGET_FREEBSD_NR_fchdir: /* fchdir(2) */
|
||||
ret = do_bsd_fchdir(arg1);
|
||||
break;
|
||||
|
||||
case TARGET_FREEBSD_NR_rename: /* rename(2) */
|
||||
ret = do_bsd_rename(arg1, arg2);
|
||||
break;
|
||||
|
||||
case TARGET_FREEBSD_NR_renameat: /* renameat(2) */
|
||||
ret = do_bsd_renameat(arg1, arg2, arg3, arg4);
|
||||
break;
|
||||
|
||||
case TARGET_FREEBSD_NR_link: /* link(2) */
|
||||
ret = do_bsd_link(arg1, arg2);
|
||||
break;
|
||||
|
||||
case TARGET_FREEBSD_NR_linkat: /* linkat(2) */
|
||||
ret = do_bsd_linkat(arg1, arg2, arg3, arg4, arg5);
|
||||
break;
|
||||
|
||||
case TARGET_FREEBSD_NR_unlink: /* unlink(2) */
|
||||
ret = do_bsd_unlink(arg1);
|
||||
break;
|
||||
|
||||
case TARGET_FREEBSD_NR_unlinkat: /* unlinkat(2) */
|
||||
ret = do_bsd_unlinkat(arg1, arg2, arg3);
|
||||
break;
|
||||
|
||||
case TARGET_FREEBSD_NR_mkdir: /* mkdir(2) */
|
||||
ret = do_bsd_mkdir(arg1, arg2);
|
||||
break;
|
||||
|
||||
case TARGET_FREEBSD_NR_mkdirat: /* mkdirat(2) */
|
||||
ret = do_bsd_mkdirat(arg1, arg2, arg3);
|
||||
break;
|
||||
|
||||
case TARGET_FREEBSD_NR_rmdir: /* rmdir(2) (XXX no rmdirat()?) */
|
||||
ret = do_bsd_rmdir(arg1);
|
||||
break;
|
||||
|
||||
case TARGET_FREEBSD_NR___getcwd: /* undocumented __getcwd() */
|
||||
ret = do_bsd___getcwd(arg1, arg2);
|
||||
break;
|
||||
|
||||
case TARGET_FREEBSD_NR_dup: /* dup(2) */
|
||||
ret = do_bsd_dup(arg1);
|
||||
break;
|
||||
|
||||
case TARGET_FREEBSD_NR_dup2: /* dup2(2) */
|
||||
ret = do_bsd_dup2(arg1, arg2);
|
||||
break;
|
||||
|
||||
case TARGET_FREEBSD_NR_truncate: /* truncate(2) */
|
||||
ret = do_bsd_truncate(cpu_env, arg1, arg2, arg3, arg4);
|
||||
break;
|
||||
|
||||
case TARGET_FREEBSD_NR_ftruncate: /* ftruncate(2) */
|
||||
ret = do_bsd_ftruncate(cpu_env, arg1, arg2, arg3, arg4);
|
||||
break;
|
||||
|
||||
case TARGET_FREEBSD_NR_acct: /* acct(2) */
|
||||
ret = do_bsd_acct(arg1);
|
||||
break;
|
||||
|
||||
case TARGET_FREEBSD_NR_sync: /* sync(2) */
|
||||
ret = do_bsd_sync();
|
||||
break;
|
||||
|
||||
default:
|
||||
qemu_log_mask(LOG_UNIMP, "Unsupported syscall: %d\n", num);
|
||||
ret = -TARGET_ENOSYS;
|
||||
|
|
|
|||
|
|
@ -226,4 +226,8 @@ type safe_##name(type1 arg1, type2 arg2, type3 arg3, type4 arg4, \
|
|||
return safe_syscall(SYS_##name, arg1, arg2, arg3, arg4, arg5, arg6); \
|
||||
}
|
||||
|
||||
/* So far all target and host bitmasks are the same */
|
||||
#define target_to_host_bitmask(x, tbl) (x)
|
||||
#define host_to_target_bitmask(x, tbl) (x)
|
||||
|
||||
#endif /* SYSCALL_DEFS_H */
|
||||
|
|
|
|||
Loading…
Reference in New Issue
Block a user