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1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 | /* * linux/arch/parisc/kernel/sys_hpux.c * * implements HPUX syscalls. */ #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) current->ptrace &= ~PT_DTRACE; 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; memset(&tmp, 0, sizeof(tmp)); tmp.st_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 = 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; } |