1 /* $Id: fs.c,v 1.25 2001/09/19 00:04:30 davem Exp $
2 * fs.c: fs related syscall emulation for Solaris
4 * Copyright (C) 1997,1998 Jakub Jelinek (jj@sunsite.mff.cuni.cz)
6 * 1999-08-19 Implemented solaris F_FREESP (truncate)
7 * fcntl, by Jason Rappleye (rappleye@ccr.buffalo.edu)
10 #include <linux/types.h>
11 #include <linux/sched.h>
12 #include <linux/slab.h>
15 #include <linux/file.h>
16 #include <linux/stat.h>
17 #include <linux/smp_lock.h>
18 #include <linux/limits.h>
19 #include <linux/resource.h>
20 #include <linux/quotaops.h>
22 #include <asm/uaccess.h>
23 #include <asm/string.h>
24 #include <asm/ptrace.h>
28 #define R4_DEV(DEV) ((DEV & 0xff) | ((DEV & 0xff00) << 10))
29 #define R4_MAJOR(DEV) (((DEV) >> 18) & 0x3fff)
30 #define R4_MINOR(DEV) ((DEV) & 0x3ffff)
41 s32 st_pad1[3]; /* network id */
50 s32 st_pad3; /* st_size, off_t expansion */
51 timestruct_t st_atime;
52 timestruct_t st_mtime;
53 timestruct_t st_ctime;
57 s32 st_pad4[8]; /* expansion area */
62 s32 st_pad1[3]; /* network id */
71 timestruct_t st_atime;
72 timestruct_t st_mtime;
73 timestruct_t st_ctime;
77 s32 st_pad4[4]; /* expansion area */
80 #define UFSMAGIC (((unsigned)'u'<<24)||((unsigned)'f'<<16)||((unsigned)'s'<<8))
82 static inline int putstat(struct sol_stat *ubuf, struct stat *kbuf)
84 if (put_user (R4_DEV(kbuf->st_dev), &ubuf->st_dev) ||
85 __put_user (kbuf->st_ino, &ubuf->st_ino) ||
86 __put_user (kbuf->st_mode, &ubuf->st_mode) ||
87 __put_user (kbuf->st_nlink, &ubuf->st_nlink) ||
88 __put_user (kbuf->st_uid, &ubuf->st_uid) ||
89 __put_user (kbuf->st_gid, &ubuf->st_gid) ||
90 __put_user (R4_DEV(kbuf->st_rdev), &ubuf->st_rdev) ||
91 __put_user (kbuf->st_size, &ubuf->st_size) ||
92 __put_user (kbuf->st_atime, &ubuf->st_atime.tv_sec) ||
93 __put_user (0, &ubuf->st_atime.tv_nsec) ||
94 __put_user (kbuf->st_mtime, &ubuf->st_mtime.tv_sec) ||
95 __put_user (0, &ubuf->st_mtime.tv_nsec) ||
96 __put_user (kbuf->st_ctime, &ubuf->st_ctime.tv_sec) ||
97 __put_user (0, &ubuf->st_ctime.tv_nsec) ||
98 __put_user (kbuf->st_blksize, &ubuf->st_blksize) ||
99 __put_user (kbuf->st_blocks, &ubuf->st_blocks) ||
100 __put_user (UFSMAGIC, (unsigned *)ubuf->st_fstype))
105 static inline int putstat64(struct sol_stat64 *ubuf, struct stat *kbuf)
107 if (put_user (R4_DEV(kbuf->st_dev), &ubuf->st_dev) ||
108 __put_user (kbuf->st_ino, &ubuf->st_ino) ||
109 __put_user (kbuf->st_mode, &ubuf->st_mode) ||
110 __put_user (kbuf->st_nlink, &ubuf->st_nlink) ||
111 __put_user (kbuf->st_uid, &ubuf->st_uid) ||
112 __put_user (kbuf->st_gid, &ubuf->st_gid) ||
113 __put_user (R4_DEV(kbuf->st_rdev), &ubuf->st_rdev) ||
114 __put_user (kbuf->st_size, &ubuf->st_size) ||
115 __put_user (kbuf->st_atime, &ubuf->st_atime.tv_sec) ||
116 __put_user (0, &ubuf->st_atime.tv_nsec) ||
117 __put_user (kbuf->st_mtime, &ubuf->st_mtime.tv_sec) ||
118 __put_user (0, &ubuf->st_mtime.tv_nsec) ||
119 __put_user (kbuf->st_ctime, &ubuf->st_ctime.tv_sec) ||
120 __put_user (0, &ubuf->st_ctime.tv_nsec) ||
121 __put_user (kbuf->st_blksize, &ubuf->st_blksize) ||
122 __put_user (kbuf->st_blocks, &ubuf->st_blocks) ||
123 __put_user (UFSMAGIC, (unsigned *)ubuf->st_fstype))
128 asmlinkage int solaris_stat(u32 filename, u32 statbuf)
133 mm_segment_t old_fs = get_fs();
134 int (*sys_newstat)(char *,struct stat *) =
135 (int (*)(char *,struct stat *))SYS(stat);
137 filenam = getname ((char *)A(filename));
138 ret = PTR_ERR(filenam);
139 if (!IS_ERR(filenam)) {
141 ret = sys_newstat(filenam, &s);
144 if (putstat ((struct sol_stat *)A(statbuf), &s))
150 asmlinkage int solaris_xstat(int vers, u32 filename, u32 statbuf)
152 /* Solaris doesn't bother with looking at vers, so we do neither */
153 return solaris_stat(filename, statbuf);
156 asmlinkage int solaris_stat64(u32 filename, u32 statbuf)
161 mm_segment_t old_fs = get_fs();
162 int (*sys_newstat)(char *,struct stat *) =
163 (int (*)(char *,struct stat *))SYS(stat);
165 filenam = getname ((char *)A(filename));
166 ret = PTR_ERR(filenam);
167 if (!IS_ERR(filenam)) {
169 ret = sys_newstat(filenam, &s);
172 if (putstat64 ((struct sol_stat64 *)A(statbuf), &s))
178 asmlinkage int solaris_lstat(u32 filename, u32 statbuf)
183 mm_segment_t old_fs = get_fs();
184 int (*sys_newlstat)(char *,struct stat *) =
185 (int (*)(char *,struct stat *))SYS(lstat);
187 filenam = getname ((char *)A(filename));
188 ret = PTR_ERR(filenam);
189 if (!IS_ERR(filenam)) {
191 ret = sys_newlstat(filenam, &s);
194 if (putstat ((struct sol_stat *)A(statbuf), &s))
200 asmlinkage int solaris_lxstat(int vers, u32 filename, u32 statbuf)
202 return solaris_lstat(filename, statbuf);
205 asmlinkage int solaris_lstat64(u32 filename, u32 statbuf)
210 mm_segment_t old_fs = get_fs();
211 int (*sys_newlstat)(char *,struct stat *) =
212 (int (*)(char *,struct stat *))SYS(lstat);
214 filenam = getname ((char *)A(filename));
215 ret = PTR_ERR(filenam);
216 if (!IS_ERR(filenam)) {
218 ret = sys_newlstat(filenam, &s);
221 if (putstat64 ((struct sol_stat64 *)A(statbuf), &s))
227 asmlinkage int solaris_fstat(unsigned int fd, u32 statbuf)
231 mm_segment_t old_fs = get_fs();
232 int (*sys_newfstat)(unsigned,struct stat *) =
233 (int (*)(unsigned,struct stat *))SYS(fstat);
236 ret = sys_newfstat(fd, &s);
238 if (putstat ((struct sol_stat *)A(statbuf), &s))
243 asmlinkage int solaris_fxstat(int vers, u32 fd, u32 statbuf)
245 return solaris_fstat(fd, statbuf);
248 asmlinkage int solaris_fstat64(unsigned int fd, u32 statbuf)
252 mm_segment_t old_fs = get_fs();
253 int (*sys_newfstat)(unsigned,struct stat *) =
254 (int (*)(unsigned,struct stat *))SYS(fstat);
257 ret = sys_newfstat(fd, &s);
259 if (putstat64 ((struct sol_stat64 *)A(statbuf), &s))
264 asmlinkage int solaris_mknod(u32 path, u32 mode, s32 dev)
266 int (*sys_mknod)(const char *,int,dev_t) =
267 (int (*)(const char *,int,dev_t))SYS(mknod);
270 if ((major = R4_MAJOR(dev)) > 255 ||
271 (minor = R4_MINOR(dev)) > 255) return -EINVAL;
272 return sys_mknod((const char *)A(path), mode, MKDEV(major,minor));
275 asmlinkage int solaris_xmknod(int vers, u32 path, u32 mode, s32 dev)
277 return solaris_mknod(path, mode, dev);
280 asmlinkage int solaris_getdents64(unsigned int fd, void *dirent, unsigned int count)
282 int (*sys_getdents)(unsigned int, void *, unsigned int) =
283 (int (*)(unsigned int, void *, unsigned int))SYS(getdents);
285 return sys_getdents(fd, dirent, count);
288 /* This statfs thingie probably will go in the near future, but... */
302 asmlinkage int solaris_statfs(u32 path, u32 buf, int len, int fstype)
306 mm_segment_t old_fs = get_fs();
307 int (*sys_statfs)(const char *,struct statfs *) =
308 (int (*)(const char *,struct statfs *))SYS(statfs);
309 struct sol_statfs *ss = (struct sol_statfs *)A(buf);
311 if (len != sizeof(struct sol_statfs)) return -EINVAL;
314 ret = sys_statfs((const char *)A(path), &s);
317 if (put_user (s.f_type, &ss->f_type) ||
318 __put_user (s.f_bsize, &ss->f_bsize) ||
319 __put_user (0, &ss->f_frsize) ||
320 __put_user (s.f_blocks, &ss->f_blocks) ||
321 __put_user (s.f_bfree, &ss->f_bfree) ||
322 __put_user (s.f_files, &ss->f_files) ||
323 __put_user (s.f_ffree, &ss->f_ffree) ||
324 __clear_user (&ss->f_fname, 12))
329 /* Linux can't stat unmounted filesystems so we
330 * simply lie and claim 100MB of 1GB is free. Sorry.
332 if (put_user (fstype, &ss->f_type) ||
333 __put_user (1024, &ss->f_bsize) ||
334 __put_user (0, &ss->f_frsize) ||
335 __put_user (1024*1024, &ss->f_blocks) ||
336 __put_user (100*1024, &ss->f_bfree) ||
337 __put_user (60000, &ss->f_files) ||
338 __put_user (50000, &ss->f_ffree) ||
339 __clear_user (&ss->f_fname, 12))
344 asmlinkage int solaris_fstatfs(u32 fd, u32 buf, int len, int fstype)
348 mm_segment_t old_fs = get_fs();
349 int (*sys_fstatfs)(unsigned,struct statfs *) =
350 (int (*)(unsigned,struct statfs *))SYS(fstatfs);
351 struct sol_statfs *ss = (struct sol_statfs *)A(buf);
353 if (len != sizeof(struct sol_statfs)) return -EINVAL;
356 ret = sys_fstatfs(fd, &s);
359 if (put_user (s.f_type, &ss->f_type) ||
360 __put_user (s.f_bsize, &ss->f_bsize) ||
361 __put_user (0, &ss->f_frsize) ||
362 __put_user (s.f_blocks, &ss->f_blocks) ||
363 __put_user (s.f_bfree, &ss->f_bfree) ||
364 __put_user (s.f_files, &ss->f_files) ||
365 __put_user (s.f_ffree, &ss->f_ffree) ||
366 __clear_user (&ss->f_fname, 12))
371 /* Otherwise fstatfs is the same as statfs */
372 return solaris_statfs(0, buf, len, fstype);
392 struct sol_statvfs64 {
409 static int report_statvfs(struct vfsmount *mnt, struct inode *inode, u32 buf)
413 struct sol_statvfs *ss = (struct sol_statvfs *)A(buf);
415 error = vfs_statfs(mnt->mnt_sb, &s);
417 const char *p = mnt->mnt_sb->s_type->name;
422 if (IS_RDONLY(inode)) i = 1;
423 if (mnt->mnt_flags & MNT_NOSUID) i |= 2;
424 if (put_user (s.f_bsize, &ss->f_bsize) ||
425 __put_user (0, &ss->f_frsize) ||
426 __put_user (s.f_blocks, &ss->f_blocks) ||
427 __put_user (s.f_bfree, &ss->f_bfree) ||
428 __put_user (s.f_bavail, &ss->f_bavail) ||
429 __put_user (s.f_files, &ss->f_files) ||
430 __put_user (s.f_ffree, &ss->f_ffree) ||
431 __put_user (s.f_ffree, &ss->f_favail) ||
432 __put_user (R4_DEV(inode->i_sb->s_dev), &ss->f_fsid) ||
433 __copy_to_user (ss->f_basetype,p,j) ||
434 __put_user (0, (char *)&ss->f_basetype[j]) ||
435 __put_user (s.f_namelen, &ss->f_namemax) ||
436 __put_user (i, &ss->f_flag) ||
437 __clear_user (&ss->f_fstr, 32))
443 static int report_statvfs64(struct vfsmount *mnt, struct inode *inode, u32 buf)
447 struct sol_statvfs64 *ss = (struct sol_statvfs64 *)A(buf);
449 error = vfs_statfs(mnt->mnt_sb, &s);
451 const char *p = mnt->mnt_sb->s_type->name;
456 if (IS_RDONLY(inode)) i = 1;
457 if (mnt->mnt_flags & MNT_NOSUID) i |= 2;
458 if (put_user (s.f_bsize, &ss->f_bsize) ||
459 __put_user (0, &ss->f_frsize) ||
460 __put_user (s.f_blocks, &ss->f_blocks) ||
461 __put_user (s.f_bfree, &ss->f_bfree) ||
462 __put_user (s.f_bavail, &ss->f_bavail) ||
463 __put_user (s.f_files, &ss->f_files) ||
464 __put_user (s.f_ffree, &ss->f_ffree) ||
465 __put_user (s.f_ffree, &ss->f_favail) ||
466 __put_user (R4_DEV(inode->i_sb->s_dev), &ss->f_fsid) ||
467 __copy_to_user (ss->f_basetype,p,j) ||
468 __put_user (0, (char *)&ss->f_basetype[j]) ||
469 __put_user (s.f_namelen, &ss->f_namemax) ||
470 __put_user (i, &ss->f_flag) ||
471 __clear_user (&ss->f_fstr, 32))
477 asmlinkage int solaris_statvfs(u32 path, u32 buf)
482 error = user_path_walk((const char *)A(path),&nd);
484 struct inode * inode = nd.dentry->d_inode;
485 error = report_statvfs(nd.mnt, inode, buf);
491 asmlinkage int solaris_fstatvfs(unsigned int fd, u32 buf)
499 error = report_statvfs(file->f_vfsmnt, file->f_dentry->d_inode, buf);
506 asmlinkage int solaris_statvfs64(u32 path, u32 buf)
512 error = user_path_walk((const char *)A(path), &nd);
514 struct inode * inode = nd.dentry->d_inode;
515 error = report_statvfs64(nd.mnt, inode, buf);
522 asmlinkage int solaris_fstatvfs64(unsigned int fd, u32 buf)
531 error = report_statvfs64(file->f_vfsmnt, file->f_dentry->d_inode, buf);
538 extern asmlinkage long sparc32_open(const char * filename, int flags, int mode);
540 asmlinkage int solaris_open(u32 fname, int flags, u32 mode)
542 const char *filename = (const char *)(long)fname;
543 int fl = flags & 0xf;
545 /* Translate flags first. */
546 if (flags & 0x2000) fl |= O_LARGEFILE;
547 if (flags & 0x8050) fl |= O_SYNC;
548 if (flags & 0x80) fl |= O_NONBLOCK;
549 if (flags & 0x100) fl |= O_CREAT;
550 if (flags & 0x200) fl |= O_TRUNC;
551 if (flags & 0x400) fl |= O_EXCL;
552 if (flags & 0x800) fl |= O_NOCTTY;
555 return sparc32_open(filename, flags, mode);
558 #define SOL_F_SETLK 6
559 #define SOL_F_SETLKW 7
560 #define SOL_F_FREESP 11
561 #define SOL_F_ISSTREAM 13
562 #define SOL_F_GETLK 14
563 #define SOL_F_PRIV 15
564 #define SOL_F_NPRIV 16
565 #define SOL_F_QUOTACTL 17
566 #define SOL_F_BLOCKS 18
567 #define SOL_F_BLKSIZE 19
568 #define SOL_F_GETOWN 23
569 #define SOL_F_SETOWN 24
581 asmlinkage int solaris_fcntl(unsigned fd, unsigned cmd, u32 arg)
583 int (*sys_fcntl)(unsigned,unsigned,unsigned long) =
584 (int (*)(unsigned,unsigned,unsigned long))SYS(fcntl);
590 case F_SETFD: return sys_fcntl(fd, cmd, (unsigned long)arg);
592 flags = sys_fcntl(fd, cmd, 0);
594 if (flags & O_SYNC) ret |= 0x8050;
595 if (flags & O_NONBLOCK) ret |= 0x80;
599 if (arg & 0x8050) flags |= O_SYNC;
600 if (arg & 0x80) flags |= O_NONBLOCK;
601 return sys_fcntl(fd, cmd, (long)flags);
607 mm_segment_t old_fs = get_fs();
610 case SOL_F_GETLK: cmd = F_GETLK; break;
611 case SOL_F_SETLK: cmd = F_SETLK; break;
612 case SOL_F_SETLKW: cmd = F_SETLKW; break;
615 if (get_user (f.l_type, &((struct sol_flock *)A(arg))->l_type) ||
616 __get_user (f.l_whence, &((struct sol_flock *)A(arg))->l_whence) ||
617 __get_user (f.l_start, &((struct sol_flock *)A(arg))->l_start) ||
618 __get_user (f.l_len, &((struct sol_flock *)A(arg))->l_len) ||
619 __get_user (f.l_pid, &((struct sol_flock *)A(arg))->l_sysid))
623 ret = sys_fcntl(fd, cmd, (unsigned long)&f);
626 if (__put_user (f.l_type, &((struct sol_flock *)A(arg))->l_type) ||
627 __put_user (f.l_whence, &((struct sol_flock *)A(arg))->l_whence) ||
628 __put_user (f.l_start, &((struct sol_flock *)A(arg))->l_start) ||
629 __put_user (f.l_len, &((struct sol_flock *)A(arg))->l_len) ||
630 __put_user (f.l_pid, &((struct sol_flock *)A(arg))->l_pid) ||
631 __put_user (0, &((struct sol_flock *)A(arg))->l_sysid))
639 int (*sys_newftruncate)(unsigned int, unsigned long)=
640 (int (*)(unsigned int, unsigned long))SYS(ftruncate);
642 if (get_user(length, &((struct sol_flock*)A(arg))->l_start))
645 return sys_newftruncate(fd, length);
651 asmlinkage int solaris_ulimit(int cmd, int val)
654 case 1: /* UL_GETFSIZE - in 512B chunks */
655 return current->rlim[RLIMIT_FSIZE].rlim_cur >> 9;
656 case 2: /* UL_SETFSIZE */
657 if ((unsigned long)val > (LONG_MAX>>9)) return -ERANGE;
660 if (val > current->rlim[RLIMIT_FSIZE].rlim_max) {
661 if (!capable(CAP_SYS_RESOURCE)) {
665 current->rlim[RLIMIT_FSIZE].rlim_max = val;
667 current->rlim[RLIMIT_FSIZE].rlim_cur = val;
670 case 3: /* UL_GMEMLIM */
671 return current->rlim[RLIMIT_DATA].rlim_cur;
672 case 4: /* UL_GDESLIM */
678 /* At least at the time I'm writing this, Linux doesn't have ACLs, so we
680 asmlinkage int solaris_acl(u32 filename, int cmd, int nentries, u32 aclbufp)
685 asmlinkage int solaris_facl(unsigned int fd, int cmd, int nentries, u32 aclbufp)
690 asmlinkage int solaris_pread(unsigned int fd, char *buf, u32 count, u32 pos)
692 ssize_t (*sys_pread)(unsigned int, char *, size_t, loff_t) =
693 (ssize_t (*)(unsigned int, char *, size_t, loff_t))SYS(pread);
695 return sys_pread(fd, buf, count, (loff_t)pos);
698 asmlinkage int solaris_pwrite(unsigned int fd, char *buf, u32 count, u32 pos)
700 ssize_t (*sys_pwrite)(unsigned int, char *, size_t, loff_t) =
701 (ssize_t (*)(unsigned int, char *, size_t, loff_t))SYS(pwrite);
703 return sys_pwrite(fd, buf, count, (loff_t)pos);
707 #define _PC_LINK_MAX 1
708 #define _PC_MAX_CANON 2
709 #define _PC_MAX_INPUT 3
710 #define _PC_NAME_MAX 4
711 #define _PC_PATH_MAX 5
712 #define _PC_PIPE_BUF 6
713 #define _PC_NO_TRUNC 7
714 #define _PC_VDISABLE 8
715 #define _PC_CHOWN_RESTRICTED 9
717 #define _PC_ASYNC_IO 10
718 #define _PC_PRIO_IO 11
719 #define _PC_SYNC_IO 12
722 /* This is not a real and complete implementation yet, just to keep
723 * the easy Solaris binaries happy.
725 asmlinkage int solaris_fpathconf(int fd, int name)
748 case _PC_CHOWN_RESTRICTED:
762 asmlinkage int solaris_pathconf(u32 path, int name)
764 return solaris_fpathconf(0, name);
767 /* solaris_llseek returns long long - quite difficult */
768 asmlinkage long solaris_llseek(struct pt_regs *regs, u32 off_hi, u32 off_lo, int whence)
770 int (*sys_llseek)(unsigned int, unsigned long, unsigned long, loff_t *, unsigned int) =
771 (int (*)(unsigned int, unsigned long, unsigned long, loff_t *, unsigned int))SYS(_llseek);
773 mm_segment_t old_fs = get_fs();
777 ret = sys_llseek((unsigned int)regs->u_regs[UREG_I0], off_hi, off_lo, &retval, whence);
779 if (ret < 0) return ret;
780 regs->u_regs[UREG_I1] = (u32)retval;
781 return (retval >> 32);
784 /* Have to mask out all but lower 3 bits */
785 asmlinkage int solaris_access(u32 filename, long mode)
787 int (*sys_access)(const char *, int) =
788 (int (*)(const char *, int))SYS(access);
790 return sys_access((const char *)A(filename), mode & 7);