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sys/compat/linux/linux_misc.c

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}; };
#ifdef LINUX_LEGACY_SYSCALLS #ifdef LINUX_LEGACY_SYSCALLS
int int
linux_utime(struct thread *td, struct linux_utime_args *args) linux_utime(struct thread *td, struct linux_utime_args *args)
{ {
struct timeval tv[2], *tvp; struct timeval tv[2], *tvp;
struct l_utimbuf lut; struct l_utimbuf lut;
char *fname;
int error; int error;
if (args->times) { if (args->times) {
if ((error = copyin(args->times, &lut, sizeof lut)) != 0) if ((error = copyin(args->times, &lut, sizeof lut)) != 0)
return (error); return (error);
tv[0].tv_sec = lut.l_actime; tv[0].tv_sec = lut.l_actime;
tv[0].tv_usec = 0; tv[0].tv_usec = 0;
tv[1].tv_sec = lut.l_modtime; tv[1].tv_sec = lut.l_modtime;
tv[1].tv_usec = 0; tv[1].tv_usec = 0;
tvp = tv; tvp = tv;
} else } else
tvp = NULL; tvp = NULL;
if (!LUSECONVPATH(td)) { return (kern_utimesat(td, AT_FDCWD, args->fname, UIO_USERSPACE,
error = kern_utimesat(td, AT_FDCWD, args->fname, UIO_USERSPACE, tvp, UIO_SYSSPACE));
tvp, UIO_SYSSPACE);
} else {
LCONVPATHEXIST(args->fname, &fname);
error = kern_utimesat(td, AT_FDCWD, fname, UIO_SYSSPACE, tvp,
UIO_SYSSPACE);
LFREEPATH(fname);
} }
return (error);
}
#endif #endif
#ifdef LINUX_LEGACY_SYSCALLS #ifdef LINUX_LEGACY_SYSCALLS
int int
linux_utimes(struct thread *td, struct linux_utimes_args *args) linux_utimes(struct thread *td, struct linux_utimes_args *args)
{ {
l_timeval ltv[2]; l_timeval ltv[2];
struct timeval tv[2], *tvp = NULL; struct timeval tv[2], *tvp = NULL;
char *fname;
int error; int error;
if (args->tptr != NULL) { if (args->tptr != NULL) {
if ((error = copyin(args->tptr, ltv, sizeof ltv)) != 0) if ((error = copyin(args->tptr, ltv, sizeof ltv)) != 0)
return (error); return (error);
tv[0].tv_sec = ltv[0].tv_sec; tv[0].tv_sec = ltv[0].tv_sec;
tv[0].tv_usec = ltv[0].tv_usec; tv[0].tv_usec = ltv[0].tv_usec;
tv[1].tv_sec = ltv[1].tv_sec; tv[1].tv_sec = ltv[1].tv_sec;
tv[1].tv_usec = ltv[1].tv_usec; tv[1].tv_usec = ltv[1].tv_usec;
tvp = tv; tvp = tv;
} }
if (!LUSECONVPATH(td)) { return (kern_utimesat(td, AT_FDCWD, args->fname, UIO_USERSPACE,
error = kern_utimesat(td, AT_FDCWD, args->fname, UIO_USERSPACE, tvp, UIO_SYSSPACE));
tvp, UIO_SYSSPACE);
} else {
LCONVPATHEXIST(args->fname, &fname);
error = kern_utimesat(td, AT_FDCWD, fname, UIO_SYSSPACE,
tvp, UIO_SYSSPACE);
LFREEPATH(fname);
} }
return (error);
}
#endif #endif
static int static int
linux_utimensat_lts_to_ts(struct l_timespec *l_times, struct timespec *times) linux_utimensat_lts_to_ts(struct l_timespec *l_times, struct timespec *times)
{ {
if (l_times->tv_nsec != LINUX_UTIME_OMIT && if (l_times->tv_nsec != LINUX_UTIME_OMIT &&
l_times->tv_nsec != LINUX_UTIME_NOW && l_times->tv_nsec != LINUX_UTIME_NOW &&
Show All 15 Lineslinux_utimensat_lts_to_ts(struct l_timespec *l_times, struct timespec *times)
return (0); return (0);
} }
static int static int
linux_common_utimensat(struct thread *td, int ldfd, const char *pathname, linux_common_utimensat(struct thread *td, int ldfd, const char *pathname,
struct timespec *timesp, int lflags) struct timespec *timesp, int lflags)
{ {
char *path = NULL; int dfd, flags = 0;
int error, dfd, flags = 0;
dfd = (ldfd == LINUX_AT_FDCWD) ? AT_FDCWD : ldfd; dfd = (ldfd == LINUX_AT_FDCWD) ? AT_FDCWD : ldfd;
if (lflags & ~(LINUX_AT_SYMLINK_NOFOLLOW | LINUX_AT_EMPTY_PATH)) if (lflags & ~(LINUX_AT_SYMLINK_NOFOLLOW | LINUX_AT_EMPTY_PATH))
return (EINVAL); return (EINVAL);
if (timesp != NULL) { if (timesp != NULL) {
/* This breaks POSIX, but is what the Linux kernel does /* This breaks POSIX, but is what the Linux kernel does
* _on purpose_ (documented in the man page for utimensat(2)), * _on purpose_ (documented in the man page for utimensat(2)),
* so we must follow that behaviour. */ * so we must follow that behaviour. */
if (timesp[0].tv_nsec == UTIME_OMIT && if (timesp[0].tv_nsec == UTIME_OMIT &&
timesp[1].tv_nsec == UTIME_OMIT) timesp[1].tv_nsec == UTIME_OMIT)
return (0); return (0);
} }
if (lflags & LINUX_AT_SYMLINK_NOFOLLOW) if (lflags & LINUX_AT_SYMLINK_NOFOLLOW)
flags |= AT_SYMLINK_NOFOLLOW; flags |= AT_SYMLINK_NOFOLLOW;
if (lflags & LINUX_AT_EMPTY_PATH) if (lflags & LINUX_AT_EMPTY_PATH)
flags |= AT_EMPTY_PATH; flags |= AT_EMPTY_PATH;
if (!LUSECONVPATH(td)) { if (pathname != NULL)
if (pathname != NULL) {
return (kern_utimensat(td, dfd, pathname, return (kern_utimensat(td, dfd, pathname,
UIO_USERSPACE, timesp, UIO_SYSSPACE, flags)); UIO_USERSPACE, timesp, UIO_SYSSPACE, flags));
}
}
if (pathname != NULL) if (lflags != 0)
LCONVPATHEXIST_AT(pathname, &path, dfd);
else if (lflags != 0)
return (EINVAL); return (EINVAL);
if (path == NULL) return (kern_futimens(td, dfd, timesp, UIO_SYSSPACE));
error = kern_futimens(td, dfd, timesp, UIO_SYSSPACE);
else {
error = kern_utimensat(td, dfd, path, UIO_SYSSPACE, timesp,
UIO_SYSSPACE, flags);
LFREEPATH(path);
} }
return (error);
}
int int
linux_utimensat(struct thread *td, struct linux_utimensat_args *args) linux_utimensat(struct thread *td, struct linux_utimensat_args *args)
{ {
struct l_timespec l_times[2]; struct l_timespec l_times[2];
struct timespec times[2], *timesp; struct timespec times[2], *timesp;
int error; int error;
if (args->times != NULL) { if (args->times != NULL) {
▲ Show 20 Lines • Show All 72 Lines • ▼ Show 20 Lines
#endif /* __i386__ || (__amd64__ && COMPAT_LINUX32) */ #endif /* __i386__ || (__amd64__ && COMPAT_LINUX32) */
#ifdef LINUX_LEGACY_SYSCALLS #ifdef LINUX_LEGACY_SYSCALLS
int int
linux_futimesat(struct thread *td, struct linux_futimesat_args *args) linux_futimesat(struct thread *td, struct linux_futimesat_args *args)
{ {
l_timeval ltv[2]; l_timeval ltv[2];
struct timeval tv[2], *tvp = NULL; struct timeval tv[2], *tvp = NULL;
char *fname;
int error, dfd; int error, dfd;
dfd = (args->dfd == LINUX_AT_FDCWD) ? AT_FDCWD : args->dfd; dfd = (args->dfd == LINUX_AT_FDCWD) ? AT_FDCWD : args->dfd;
if (args->utimes != NULL) { if (args->utimes != NULL) {
if ((error = copyin(args->utimes, ltv, sizeof ltv)) != 0) if ((error = copyin(args->utimes, ltv, sizeof ltv)) != 0)
return (error); return (error);
tv[0].tv_sec = ltv[0].tv_sec; tv[0].tv_sec = ltv[0].tv_sec;
tv[0].tv_usec = ltv[0].tv_usec; tv[0].tv_usec = ltv[0].tv_usec;
tv[1].tv_sec = ltv[1].tv_sec; tv[1].tv_sec = ltv[1].tv_sec;
tv[1].tv_usec = ltv[1].tv_usec; tv[1].tv_usec = ltv[1].tv_usec;
tvp = tv; tvp = tv;
} }
if (!LUSECONVPATH(td)) { return (kern_utimesat(td, dfd, args->filename, UIO_USERSPACE,
error = kern_utimesat(td, dfd, args->filename, UIO_USERSPACE, tvp, UIO_SYSSPACE));
tvp, UIO_SYSSPACE);
} else {
LCONVPATHEXIST_AT(args->filename, &fname, dfd);
error = kern_utimesat(td, dfd, fname, UIO_SYSSPACE,
tvp, UIO_SYSSPACE);
LFREEPATH(fname);
} }
return (error);
}
#endif #endif
static int static int
linux_common_wait(struct thread *td, idtype_t idtype, int id, int *statusp, linux_common_wait(struct thread *td, idtype_t idtype, int id, int *statusp,
int options, void *rup, l_siginfo_t *infop) int options, void *rup, l_siginfo_t *infop)
{ {
l_siginfo_t lsi; l_siginfo_t lsi;
siginfo_t siginfo; siginfo_t siginfo;
▲ Show 20 Lines • Show All 140 Lines • ▼ Show 20 Lineslinux_waitid(struct thread *td, struct linux_waitid_args *args)
return (error); return (error);
} }
#ifdef LINUX_LEGACY_SYSCALLS #ifdef LINUX_LEGACY_SYSCALLS
int int
linux_mknod(struct thread *td, struct linux_mknod_args *args) linux_mknod(struct thread *td, struct linux_mknod_args *args)
{ {
char *path;
int error; int error;
enum uio_seg seg;
bool convpath;
convpath = LUSECONVPATH(td);
if (!convpath) {
path = args->path;
seg = UIO_USERSPACE;
} else {
LCONVPATHCREAT(args->path, &path);
seg = UIO_SYSSPACE;
}
switch (args->mode & S_IFMT) { switch (args->mode & S_IFMT) {
case S_IFIFO: case S_IFIFO:
case S_IFSOCK: case S_IFSOCK:
error = kern_mkfifoat(td, AT_FDCWD, path, seg, error = kern_mkfifoat(td, AT_FDCWD, args->path, UIO_USERSPACE,
args->mode); args->mode);
break; break;
case S_IFCHR: case S_IFCHR:
case S_IFBLK: case S_IFBLK:
error = kern_mknodat(td, AT_FDCWD, path, seg, error = kern_mknodat(td, AT_FDCWD, args->path, UIO_USERSPACE,
args->mode, linux_decode_dev(args->dev)); args->mode, linux_decode_dev(args->dev));
break; break;
case S_IFDIR: case S_IFDIR:
error = EPERM; error = EPERM;
break; break;
case 0: case 0:
args->mode |= S_IFREG; args->mode |= S_IFREG;
/* FALLTHROUGH */ /* FALLTHROUGH */
case S_IFREG: case S_IFREG:
error = kern_openat(td, AT_FDCWD, path, seg, error = kern_openat(td, AT_FDCWD, args->path, UIO_USERSPACE,
O_WRONLY | O_CREAT | O_TRUNC, args->mode); O_WRONLY | O_CREAT | O_TRUNC, args->mode);
if (error == 0) if (error == 0)
kern_close(td, td->td_retval[0]); kern_close(td, td->td_retval[0]);
break; break;
default: default:
error = EINVAL; error = EINVAL;
break; break;
} }
if (convpath)
LFREEPATH(path);
return (error); return (error);
} }
#endif #endif
int int
linux_mknodat(struct thread *td, struct linux_mknodat_args *args) linux_mknodat(struct thread *td, struct linux_mknodat_args *args)
{ {
char *path;
int error, dfd; int error, dfd;
enum uio_seg seg;
bool convpath;
dfd = (args->dfd == LINUX_AT_FDCWD) ? AT_FDCWD : args->dfd; dfd = (args->dfd == LINUX_AT_FDCWD) ? AT_FDCWD : args->dfd;
convpath = LUSECONVPATH(td);
if (!convpath) {
path = __DECONST(char *, args->filename);
seg = UIO_USERSPACE;
} else {
LCONVPATHCREAT_AT(args->filename, &path, dfd);
seg = UIO_SYSSPACE;
}
switch (args->mode & S_IFMT) { switch (args->mode & S_IFMT) {
case S_IFIFO: case S_IFIFO:
case S_IFSOCK: case S_IFSOCK:
error = kern_mkfifoat(td, dfd, path, seg, args->mode); error = kern_mkfifoat(td, dfd, args->filename, UIO_USERSPACE,
args->mode);
break; break;
case S_IFCHR: case S_IFCHR:
case S_IFBLK: case S_IFBLK:
error = kern_mknodat(td, dfd, path, seg, args->mode, error = kern_mknodat(td, dfd, args->filename, UIO_USERSPACE,
linux_decode_dev(args->dev)); args->mode, linux_decode_dev(args->dev));
break; break;
case S_IFDIR: case S_IFDIR:
error = EPERM; error = EPERM;
break; break;
case 0: case 0:
args->mode |= S_IFREG; args->mode |= S_IFREG;
/* FALLTHROUGH */ /* FALLTHROUGH */
case S_IFREG: case S_IFREG:
error = kern_openat(td, dfd, path, seg, error = kern_openat(td, dfd, args->filename, UIO_USERSPACE,
O_WRONLY | O_CREAT | O_TRUNC, args->mode); O_WRONLY | O_CREAT | O_TRUNC, args->mode);
if (error == 0) if (error == 0)
kern_close(td, td->td_retval[0]); kern_close(td, td->td_retval[0]);
break; break;
default: default:
error = EINVAL; error = EINVAL;
break; break;
} }
if (convpath)
LFREEPATH(path);
return (error); return (error);
} }
/* /*
* UGH! This is just about the dumbest idea I've ever heard!! * UGH! This is just about the dumbest idea I've ever heard!!
*/ */
int int
linux_personality(struct thread *td, struct linux_personality_args *args) linux_personality(struct thread *td, struct linux_personality_args *args)
▲ Show 20 Lines • Show All 1,633 Lines • ▼ Show 20 Lineslinux_seccomp(struct thread *td, struct linux_seccomp_args *args)
} }
} }
#ifndef COMPAT_LINUX32 #ifndef COMPAT_LINUX32
int int
linux_execve(struct thread *td, struct linux_execve_args *args) linux_execve(struct thread *td, struct linux_execve_args *args)
{ {
struct image_args eargs; struct image_args eargs;
char *path;
int error; int error;
LINUX_CTR(execve); LINUX_CTR(execve);
if (!LUSECONVPATH(td)) {
error = exec_copyin_args(&eargs, args->path, UIO_USERSPACE, error = exec_copyin_args(&eargs, args->path, UIO_USERSPACE,
args->argp, args->envp); args->argp, args->envp);
} else {
LCONVPATHEXIST(args->path, &path);
error = exec_copyin_args(&eargs, path, UIO_SYSSPACE, args->argp,
args->envp);
LFREEPATH(path);
}
if (error == 0) if (error == 0)
error = linux_common_execve(td, &eargs); error = linux_common_execve(td, &eargs);
AUDIT_SYSCALL_EXIT(error == EJUSTRETURN ? 0 : error, td); AUDIT_SYSCALL_EXIT(error == EJUSTRETURN ? 0 : error, td);
return (error); return (error);
} }
#endif #endif