1 /* $Id: fs.c,v 1.27 2002/02/08 03:57:14 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>
14 #include <linux/namei.h>
16 #include <linux/file.h>
17 #include <linux/stat.h>
18 #include <linux/smp_lock.h>
19 #include <linux/limits.h>
20 #include <linux/resource.h>
21 #include <linux/quotaops.h>
22 #include <linux/mount.h>
23 #include <linux/vfs.h>
25 #include <asm/uaccess.h>
26 #include <asm/string.h>
27 #include <asm/ptrace.h>
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 kstat *kbuf)
84 if (kbuf->size > MAX_NON_LFS ||
85 !sysv_valid_dev(kbuf->dev) ||
86 !sysv_valid_dev(kbuf->rdev))
88 if (put_user (sysv_encode_dev(kbuf->dev), &ubuf->st_dev) ||
89 __put_user (kbuf->ino, &ubuf->st_ino) ||
90 __put_user (kbuf->mode, &ubuf->st_mode) ||
91 __put_user (kbuf->nlink, &ubuf->st_nlink) ||
92 __put_user (kbuf->uid, &ubuf->st_uid) ||
93 __put_user (kbuf->gid, &ubuf->st_gid) ||
94 __put_user (sysv_encode_dev(kbuf->rdev), &ubuf->st_rdev) ||
95 __put_user (kbuf->size, &ubuf->st_size) ||
96 __put_user (kbuf->atime.tv_sec, &ubuf->st_atime.tv_sec) ||
97 __put_user (kbuf->atime.tv_nsec, &ubuf->st_atime.tv_nsec) ||
98 __put_user (kbuf->mtime.tv_sec, &ubuf->st_mtime.tv_sec) ||
99 __put_user (kbuf->mtime.tv_nsec, &ubuf->st_mtime.tv_nsec) ||
100 __put_user (kbuf->ctime.tv_sec, &ubuf->st_ctime.tv_sec) ||
101 __put_user (kbuf->ctime.tv_nsec, &ubuf->st_ctime.tv_nsec) ||
102 __put_user (kbuf->blksize, &ubuf->st_blksize) ||
103 __put_user (kbuf->blocks, &ubuf->st_blocks) ||
104 __put_user (UFSMAGIC, (unsigned *)ubuf->st_fstype))
109 static inline int putstat64(struct sol_stat64 *ubuf, struct kstat *kbuf)
111 if (!sysv_valid_dev(kbuf->dev) || !sysv_valid_dev(kbuf->rdev))
113 if (put_user (sysv_encode_dev(kbuf->dev), &ubuf->st_dev) ||
114 __put_user (kbuf->ino, &ubuf->st_ino) ||
115 __put_user (kbuf->mode, &ubuf->st_mode) ||
116 __put_user (kbuf->nlink, &ubuf->st_nlink) ||
117 __put_user (kbuf->uid, &ubuf->st_uid) ||
118 __put_user (kbuf->gid, &ubuf->st_gid) ||
119 __put_user (sysv_encode_dev(kbuf->rdev), &ubuf->st_rdev) ||
120 __put_user (kbuf->size, &ubuf->st_size) ||
121 __put_user (kbuf->atime.tv_sec, &ubuf->st_atime.tv_sec) ||
122 __put_user (kbuf->atime.tv_nsec, &ubuf->st_atime.tv_nsec) ||
123 __put_user (kbuf->mtime.tv_sec, &ubuf->st_mtime.tv_sec) ||
124 __put_user (kbuf->mtime.tv_nsec, &ubuf->st_mtime.tv_nsec) ||
125 __put_user (kbuf->ctime.tv_sec, &ubuf->st_ctime.tv_sec) ||
126 __put_user (kbuf->ctime.tv_nsec, &ubuf->st_ctime.tv_nsec) ||
127 __put_user (kbuf->blksize, &ubuf->st_blksize) ||
128 __put_user (kbuf->blocks, &ubuf->st_blocks) ||
129 __put_user (UFSMAGIC, (unsigned *)ubuf->st_fstype))
134 asmlinkage int solaris_stat(u32 filename, u32 statbuf)
139 mm_segment_t old_fs = get_fs();
141 filenam = getname ((char *)A(filename));
142 ret = PTR_ERR(filenam);
143 if (!IS_ERR(filenam)) {
145 ret = vfs_stat(filenam, &s);
148 return putstat((struct sol_stat *)A(statbuf), &s);
153 asmlinkage int solaris_xstat(int vers, u32 filename, u32 statbuf)
155 /* Solaris doesn't bother with looking at vers, so we do neither */
156 return solaris_stat(filename, statbuf);
159 asmlinkage int solaris_stat64(u32 filename, u32 statbuf)
164 mm_segment_t old_fs = get_fs();
166 filenam = getname ((char *)A(filename));
167 ret = PTR_ERR(filenam);
168 if (!IS_ERR(filenam)) {
170 ret = vfs_stat(filenam, &s);
173 return putstat64((struct sol_stat64 *)A(statbuf), &s);
178 asmlinkage int solaris_lstat(u32 filename, u32 statbuf)
183 mm_segment_t old_fs = get_fs();
185 filenam = getname ((char *)A(filename));
186 ret = PTR_ERR(filenam);
187 if (!IS_ERR(filenam)) {
189 ret = vfs_lstat(filenam, &s);
192 return putstat((struct sol_stat *)A(statbuf), &s);
197 asmlinkage int solaris_lxstat(int vers, u32 filename, u32 statbuf)
199 return solaris_lstat(filename, statbuf);
202 asmlinkage int solaris_lstat64(u32 filename, u32 statbuf)
207 mm_segment_t old_fs = get_fs();
209 filenam = getname ((char *)A(filename));
210 ret = PTR_ERR(filenam);
211 if (!IS_ERR(filenam)) {
213 ret = vfs_lstat(filenam, &s);
216 return putstat64((struct sol_stat64 *)A(statbuf), &s);
221 asmlinkage int solaris_fstat(unsigned int fd, u32 statbuf)
225 ret = vfs_fstat(fd, &s);
227 return putstat((struct sol_stat *)A(statbuf), &s);
231 asmlinkage int solaris_fxstat(int vers, u32 fd, u32 statbuf)
233 return solaris_fstat(fd, statbuf);
236 asmlinkage int solaris_fstat64(unsigned int fd, u32 statbuf)
241 ret = vfs_fstat(fd, &s);
243 return putstat64((struct sol_stat64 *)A(statbuf), &s);
247 asmlinkage int solaris_mknod(u32 path, u32 mode, s32 dev)
249 int (*sys_mknod)(const char *,int,unsigned) =
250 (int (*)(const char *,int,unsigned))SYS(mknod);
251 int major = sysv_major(dev);
252 int minor = sysv_minor(dev);
254 /* minor is guaranteed to be OK for MKDEV, major might be not */
257 return sys_mknod((const char *)A(path), mode,
258 new_encode_dev(MKDEV(major,minor)));
261 asmlinkage int solaris_xmknod(int vers, u32 path, u32 mode, s32 dev)
263 return solaris_mknod(path, mode, dev);
266 asmlinkage int solaris_getdents64(unsigned int fd, void *dirent, unsigned int count)
268 int (*sys_getdents)(unsigned int, void *, unsigned int) =
269 (int (*)(unsigned int, void *, unsigned int))SYS(getdents);
271 return sys_getdents(fd, dirent, count);
274 /* This statfs thingie probably will go in the near future, but... */
288 asmlinkage int solaris_statfs(u32 path, u32 buf, int len, int fstype)
292 mm_segment_t old_fs = get_fs();
293 int (*sys_statfs)(const char *,struct statfs *) =
294 (int (*)(const char *,struct statfs *))SYS(statfs);
295 struct sol_statfs *ss = (struct sol_statfs *)A(buf);
297 if (len != sizeof(struct sol_statfs)) return -EINVAL;
300 ret = sys_statfs((const char *)A(path), &s);
303 if (put_user (s.f_type, &ss->f_type) ||
304 __put_user (s.f_bsize, &ss->f_bsize) ||
305 __put_user (0, &ss->f_frsize) ||
306 __put_user (s.f_blocks, &ss->f_blocks) ||
307 __put_user (s.f_bfree, &ss->f_bfree) ||
308 __put_user (s.f_files, &ss->f_files) ||
309 __put_user (s.f_ffree, &ss->f_ffree) ||
310 __clear_user (&ss->f_fname, 12))
315 /* Linux can't stat unmounted filesystems so we
316 * simply lie and claim 100MB of 1GB is free. Sorry.
318 if (put_user (fstype, &ss->f_type) ||
319 __put_user (1024, &ss->f_bsize) ||
320 __put_user (0, &ss->f_frsize) ||
321 __put_user (1024*1024, &ss->f_blocks) ||
322 __put_user (100*1024, &ss->f_bfree) ||
323 __put_user (60000, &ss->f_files) ||
324 __put_user (50000, &ss->f_ffree) ||
325 __clear_user (&ss->f_fname, 12))
330 asmlinkage int solaris_fstatfs(u32 fd, u32 buf, int len, int fstype)
334 mm_segment_t old_fs = get_fs();
335 int (*sys_fstatfs)(unsigned,struct statfs *) =
336 (int (*)(unsigned,struct statfs *))SYS(fstatfs);
337 struct sol_statfs *ss = (struct sol_statfs *)A(buf);
339 if (len != sizeof(struct sol_statfs)) return -EINVAL;
342 ret = sys_fstatfs(fd, &s);
345 if (put_user (s.f_type, &ss->f_type) ||
346 __put_user (s.f_bsize, &ss->f_bsize) ||
347 __put_user (0, &ss->f_frsize) ||
348 __put_user (s.f_blocks, &ss->f_blocks) ||
349 __put_user (s.f_bfree, &ss->f_bfree) ||
350 __put_user (s.f_files, &ss->f_files) ||
351 __put_user (s.f_ffree, &ss->f_ffree) ||
352 __clear_user (&ss->f_fname, 12))
357 /* Otherwise fstatfs is the same as statfs */
358 return solaris_statfs(0, buf, len, fstype);
378 struct sol_statvfs64 {
395 static int report_statvfs(struct vfsmount *mnt, struct inode *inode, u32 buf)
399 struct sol_statvfs *ss = (struct sol_statvfs *)A(buf);
401 error = vfs_statfs(mnt->mnt_sb, &s);
403 const char *p = mnt->mnt_sb->s_type->name;
408 if (IS_RDONLY(inode)) i = 1;
409 if (mnt->mnt_flags & MNT_NOSUID) i |= 2;
410 if (!sysv_valid_dev(inode->i_sb->s_dev))
412 if (put_user (s.f_bsize, &ss->f_bsize) ||
413 __put_user (0, &ss->f_frsize) ||
414 __put_user (s.f_blocks, &ss->f_blocks) ||
415 __put_user (s.f_bfree, &ss->f_bfree) ||
416 __put_user (s.f_bavail, &ss->f_bavail) ||
417 __put_user (s.f_files, &ss->f_files) ||
418 __put_user (s.f_ffree, &ss->f_ffree) ||
419 __put_user (s.f_ffree, &ss->f_favail) ||
420 __put_user (sysv_encode_dev(inode->i_sb->s_dev), &ss->f_fsid) ||
421 __copy_to_user (ss->f_basetype,p,j) ||
422 __put_user (0, (char *)&ss->f_basetype[j]) ||
423 __put_user (s.f_namelen, &ss->f_namemax) ||
424 __put_user (i, &ss->f_flag) ||
425 __clear_user (&ss->f_fstr, 32))
431 static int report_statvfs64(struct vfsmount *mnt, struct inode *inode, u32 buf)
435 struct sol_statvfs64 *ss = (struct sol_statvfs64 *)A(buf);
437 error = vfs_statfs(mnt->mnt_sb, &s);
439 const char *p = mnt->mnt_sb->s_type->name;
444 if (IS_RDONLY(inode)) i = 1;
445 if (mnt->mnt_flags & MNT_NOSUID) i |= 2;
446 if (!sysv_valid_dev(inode->i_sb->s_dev))
448 if (put_user (s.f_bsize, &ss->f_bsize) ||
449 __put_user (0, &ss->f_frsize) ||
450 __put_user (s.f_blocks, &ss->f_blocks) ||
451 __put_user (s.f_bfree, &ss->f_bfree) ||
452 __put_user (s.f_bavail, &ss->f_bavail) ||
453 __put_user (s.f_files, &ss->f_files) ||
454 __put_user (s.f_ffree, &ss->f_ffree) ||
455 __put_user (s.f_ffree, &ss->f_favail) ||
456 __put_user (sysv_encode_dev(inode->i_sb->s_dev), &ss->f_fsid) ||
457 __copy_to_user (ss->f_basetype,p,j) ||
458 __put_user (0, (char *)&ss->f_basetype[j]) ||
459 __put_user (s.f_namelen, &ss->f_namemax) ||
460 __put_user (i, &ss->f_flag) ||
461 __clear_user (&ss->f_fstr, 32))
467 asmlinkage int solaris_statvfs(u32 path, u32 buf)
472 error = user_path_walk((const char *)A(path),&nd);
474 struct inode * inode = nd.dentry->d_inode;
475 error = report_statvfs(nd.mnt, inode, buf);
481 asmlinkage int solaris_fstatvfs(unsigned int fd, u32 buf)
489 error = report_statvfs(file->f_vfsmnt, file->f_dentry->d_inode, buf);
496 asmlinkage int solaris_statvfs64(u32 path, u32 buf)
502 error = user_path_walk((const char *)A(path), &nd);
504 struct inode * inode = nd.dentry->d_inode;
505 error = report_statvfs64(nd.mnt, inode, buf);
512 asmlinkage int solaris_fstatvfs64(unsigned int fd, u32 buf)
521 error = report_statvfs64(file->f_vfsmnt, file->f_dentry->d_inode, buf);
528 extern asmlinkage long sparc32_open(const char * filename, int flags, int mode);
530 asmlinkage int solaris_open(u32 fname, int flags, u32 mode)
532 const char *filename = (const char *)(long)fname;
533 int fl = flags & 0xf;
535 /* Translate flags first. */
536 if (flags & 0x2000) fl |= O_LARGEFILE;
537 if (flags & 0x8050) fl |= O_SYNC;
538 if (flags & 0x80) fl |= O_NONBLOCK;
539 if (flags & 0x100) fl |= O_CREAT;
540 if (flags & 0x200) fl |= O_TRUNC;
541 if (flags & 0x400) fl |= O_EXCL;
542 if (flags & 0x800) fl |= O_NOCTTY;
545 return sparc32_open(filename, flags, mode);
548 #define SOL_F_SETLK 6
549 #define SOL_F_SETLKW 7
550 #define SOL_F_FREESP 11
551 #define SOL_F_ISSTREAM 13
552 #define SOL_F_GETLK 14
553 #define SOL_F_PRIV 15
554 #define SOL_F_NPRIV 16
555 #define SOL_F_QUOTACTL 17
556 #define SOL_F_BLOCKS 18
557 #define SOL_F_BLKSIZE 19
558 #define SOL_F_GETOWN 23
559 #define SOL_F_SETOWN 24
571 asmlinkage int solaris_fcntl(unsigned fd, unsigned cmd, u32 arg)
573 int (*sys_fcntl)(unsigned,unsigned,unsigned long) =
574 (int (*)(unsigned,unsigned,unsigned long))SYS(fcntl);
580 case F_SETFD: return sys_fcntl(fd, cmd, (unsigned long)arg);
582 flags = sys_fcntl(fd, cmd, 0);
584 if (flags & O_SYNC) ret |= 0x8050;
585 if (flags & O_NONBLOCK) ret |= 0x80;
589 if (arg & 0x8050) flags |= O_SYNC;
590 if (arg & 0x80) flags |= O_NONBLOCK;
591 return sys_fcntl(fd, cmd, (long)flags);
597 mm_segment_t old_fs = get_fs();
600 case SOL_F_GETLK: cmd = F_GETLK; break;
601 case SOL_F_SETLK: cmd = F_SETLK; break;
602 case SOL_F_SETLKW: cmd = F_SETLKW; break;
605 if (get_user (f.l_type, &((struct sol_flock *)A(arg))->l_type) ||
606 __get_user (f.l_whence, &((struct sol_flock *)A(arg))->l_whence) ||
607 __get_user (f.l_start, &((struct sol_flock *)A(arg))->l_start) ||
608 __get_user (f.l_len, &((struct sol_flock *)A(arg))->l_len) ||
609 __get_user (f.l_pid, &((struct sol_flock *)A(arg))->l_sysid))
613 ret = sys_fcntl(fd, cmd, (unsigned long)&f);
616 if (__put_user (f.l_type, &((struct sol_flock *)A(arg))->l_type) ||
617 __put_user (f.l_whence, &((struct sol_flock *)A(arg))->l_whence) ||
618 __put_user (f.l_start, &((struct sol_flock *)A(arg))->l_start) ||
619 __put_user (f.l_len, &((struct sol_flock *)A(arg))->l_len) ||
620 __put_user (f.l_pid, &((struct sol_flock *)A(arg))->l_pid) ||
621 __put_user (0, &((struct sol_flock *)A(arg))->l_sysid))
629 int (*sys_newftruncate)(unsigned int, unsigned long)=
630 (int (*)(unsigned int, unsigned long))SYS(ftruncate);
632 if (get_user(length, &((struct sol_flock*)A(arg))->l_start))
635 return sys_newftruncate(fd, length);
641 asmlinkage int solaris_ulimit(int cmd, int val)
644 case 1: /* UL_GETFSIZE - in 512B chunks */
645 return current->rlim[RLIMIT_FSIZE].rlim_cur >> 9;
646 case 2: /* UL_SETFSIZE */
647 if ((unsigned long)val > (LONG_MAX>>9)) return -ERANGE;
650 if (val > current->rlim[RLIMIT_FSIZE].rlim_max) {
651 if (!capable(CAP_SYS_RESOURCE)) {
655 current->rlim[RLIMIT_FSIZE].rlim_max = val;
657 current->rlim[RLIMIT_FSIZE].rlim_cur = val;
660 case 3: /* UL_GMEMLIM */
661 return current->rlim[RLIMIT_DATA].rlim_cur;
662 case 4: /* UL_GDESLIM */
668 /* At least at the time I'm writing this, Linux doesn't have ACLs, so we
670 asmlinkage int solaris_acl(u32 filename, int cmd, int nentries, u32 aclbufp)
675 asmlinkage int solaris_facl(unsigned int fd, int cmd, int nentries, u32 aclbufp)
680 asmlinkage int solaris_pread(unsigned int fd, char *buf, u32 count, u32 pos)
682 ssize_t (*sys_pread64)(unsigned int, char *, size_t, loff_t) =
683 (ssize_t (*)(unsigned int, char *, size_t, loff_t))SYS(pread64);
685 return sys_pread64(fd, buf, count, (loff_t)pos);
688 asmlinkage int solaris_pwrite(unsigned int fd, char *buf, u32 count, u32 pos)
690 ssize_t (*sys_pwrite64)(unsigned int, char *, size_t, loff_t) =
691 (ssize_t (*)(unsigned int, char *, size_t, loff_t))SYS(pwrite64);
693 return sys_pwrite64(fd, buf, count, (loff_t)pos);
697 #define _PC_LINK_MAX 1
698 #define _PC_MAX_CANON 2
699 #define _PC_MAX_INPUT 3
700 #define _PC_NAME_MAX 4
701 #define _PC_PATH_MAX 5
702 #define _PC_PIPE_BUF 6
703 #define _PC_NO_TRUNC 7
704 #define _PC_VDISABLE 8
705 #define _PC_CHOWN_RESTRICTED 9
707 #define _PC_ASYNC_IO 10
708 #define _PC_PRIO_IO 11
709 #define _PC_SYNC_IO 12
712 /* This is not a real and complete implementation yet, just to keep
713 * the easy Solaris binaries happy.
715 asmlinkage int solaris_fpathconf(int fd, int name)
738 case _PC_CHOWN_RESTRICTED:
752 asmlinkage int solaris_pathconf(u32 path, int name)
754 return solaris_fpathconf(0, name);
757 /* solaris_llseek returns long long - quite difficult */
758 asmlinkage long solaris_llseek(struct pt_regs *regs, u32 off_hi, u32 off_lo, int whence)
760 int (*sys_llseek)(unsigned int, unsigned long, unsigned long, loff_t *, unsigned int) =
761 (int (*)(unsigned int, unsigned long, unsigned long, loff_t *, unsigned int))SYS(_llseek);
763 mm_segment_t old_fs = get_fs();
767 ret = sys_llseek((unsigned int)regs->u_regs[UREG_I0], off_hi, off_lo, &retval, whence);
769 if (ret < 0) return ret;
770 regs->u_regs[UREG_I1] = (u32)retval;
771 return (retval >> 32);
774 /* Have to mask out all but lower 3 bits */
775 asmlinkage int solaris_access(u32 filename, long mode)
777 int (*sys_access)(const char *, int) =
778 (int (*)(const char *, int))SYS(access);
780 return sys_access((const char *)A(filename), mode & 7);