diff options
Diffstat (limited to 'arch/parisc/hpux/fs.c')
| -rw-r--r-- | arch/parisc/hpux/fs.c | 199 |
1 files changed, 199 insertions, 0 deletions
diff --git a/arch/parisc/hpux/fs.c b/arch/parisc/hpux/fs.c new file mode 100644 index 00000000000..d7c80edf448 --- /dev/null +++ b/arch/parisc/hpux/fs.c @@ -0,0 +1,199 @@ +/* + * Implements HPUX syscalls. + * + * Copyright (C) 1999 Matthew Wilcox <willy with parisc-linux.org> + * Copyright (C) 2000 Michael Ang <mang with subcarrier.org> + * Copyright (C) 2000 John Marvin <jsm with parisc-linux.org> + * Copyright (C) 2000 Philipp Rumpf + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA + */ + +#include <linux/mm.h> +#include <linux/sched.h> +#include <linux/file.h> +#include <linux/smp_lock.h> +#include <linux/slab.h> +#include <linux/ptrace.h> +#include <asm/errno.h> +#include <asm/uaccess.h> + +int hpux_execve(struct pt_regs *regs) +{ + int error; + char *filename; + + filename = getname((char *) regs->gr[26]); + error = PTR_ERR(filename); + if (IS_ERR(filename)) + goto out; + + error = do_execve(filename, (char **) regs->gr[25], + (char **)regs->gr[24], regs); + + if (error == 0) { + task_lock(current); + current->ptrace &= ~PT_DTRACE; + task_unlock(current); + } + putname(filename); + +out: + return error; +} + +struct hpux_dirent { + loff_t d_off; + ino_t d_ino; + short d_reclen; + short d_namlen; + char d_name[1]; +}; + +struct getdents_callback { + struct hpux_dirent *current_dir; + struct hpux_dirent *previous; + int count; + int error; +}; + +#define NAME_OFFSET(de) ((int) ((de)->d_name - (char *) (de))) +#define ROUND_UP(x) (((x)+sizeof(long)-1) & ~(sizeof(long)-1)) + +static int filldir(void * __buf, const char * name, int namlen, loff_t offset, + ino_t ino, unsigned d_type) +{ + struct hpux_dirent * dirent; + struct getdents_callback * buf = (struct getdents_callback *) __buf; + int reclen = ROUND_UP(NAME_OFFSET(dirent) + namlen + 1); + + buf->error = -EINVAL; /* only used if we fail.. */ + if (reclen > buf->count) + return -EINVAL; + dirent = buf->previous; + if (dirent) + put_user(offset, &dirent->d_off); + dirent = buf->current_dir; + buf->previous = dirent; + put_user(ino, &dirent->d_ino); + put_user(reclen, &dirent->d_reclen); + put_user(namlen, &dirent->d_namlen); + copy_to_user(dirent->d_name, name, namlen); + put_user(0, dirent->d_name + namlen); + ((char *) dirent) += reclen; + buf->current_dir = dirent; + buf->count -= reclen; + return 0; +} + +#undef NAME_OFFSET +#undef ROUND_UP + +int hpux_getdents(unsigned int fd, struct hpux_dirent *dirent, unsigned int count) +{ + struct file * file; + struct hpux_dirent * lastdirent; + struct getdents_callback buf; + int error = -EBADF; + + file = fget(fd); + if (!file) + goto out; + + buf.current_dir = dirent; + buf.previous = NULL; + buf.count = count; + buf.error = 0; + + error = vfs_readdir(file, filldir, &buf); + if (error < 0) + goto out_putf; + error = buf.error; + lastdirent = buf.previous; + if (lastdirent) { + put_user(file->f_pos, &lastdirent->d_off); + error = count - buf.count; + } + +out_putf: + fput(file); +out: + return error; +} + +int hpux_mount(const char *fs, const char *path, int mflag, + const char *fstype, const char *dataptr, int datalen) +{ + return -ENOSYS; +} + +static int cp_hpux_stat(struct kstat *stat, struct hpux_stat64 *statbuf) +{ + struct hpux_stat64 tmp; + + /* we probably want a different split here - is hpux 12:20? */ + + if (!new_valid_dev(stat->dev) || !new_valid_dev(stat->rdev)) + return -EOVERFLOW; + + memset(&tmp, 0, sizeof(tmp)); + tmp.st_dev = new_encode_dev(stat->dev); + tmp.st_ino = stat->ino; + tmp.st_mode = stat->mode; + tmp.st_nlink = stat->nlink; + tmp.st_uid = stat->uid; + tmp.st_gid = stat->gid; + tmp.st_rdev = new_encode_dev(stat->rdev); + tmp.st_size = stat->size; + tmp.st_atime = stat->atime.tv_sec; + tmp.st_mtime = stat->mtime.tv_sec; + tmp.st_ctime = stat->ctime.tv_sec; + tmp.st_blocks = stat->blocks; + tmp.st_blksize = stat->blksize; + return copy_to_user(statbuf,&tmp,sizeof(tmp)) ? -EFAULT : 0; +} + +long hpux_stat64(char *filename, struct hpux_stat64 *statbuf) +{ + struct kstat stat; + int error = vfs_stat(filename, &stat); + + if (!error) + error = cp_hpux_stat(&stat, statbuf); + + return error; +} + +long hpux_fstat64(unsigned int fd, struct hpux_stat64 *statbuf) +{ + struct kstat stat; + int error = vfs_fstat(fd, &stat); + + if (!error) + error = cp_hpux_stat(&stat, statbuf); + + return error; +} + +long hpux_lstat64(char *filename, struct hpux_stat64 *statbuf) +{ + struct kstat stat; + int error = vfs_lstat(filename, &stat); + + if (!error) + error = cp_hpux_stat(&stat, statbuf); + + return error; +} |