11da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds/* 21da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * This module exports the functions: 31da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 41da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 'int set_selection(struct tiocl_selection __user *, struct tty_struct *)' 51da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 'void clear_selection(void)' 61da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 'int paste_selection(struct tty_struct *)' 71da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 'int sel_loadlut(char __user *)' 81da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 91da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * Now that /dev/vcs exists, most of this can disappear again. 101da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds */ 111da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 121da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#include <linux/module.h> 131da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#include <linux/tty.h> 141da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#include <linux/sched.h> 151da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#include <linux/mm.h> 161da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#include <linux/slab.h> 171da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#include <linux/types.h> 181da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 191da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#include <asm/uaccess.h> 201da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 21759448f459234bfcf34b82471f0dba77a9aca498Jan Engelhardt#include <linux/kbd_kern.h> 221da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#include <linux/vt_kern.h> 231da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#include <linux/consolemap.h> 241da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#include <linux/selection.h> 251da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#include <linux/tiocl.h> 261da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#include <linux/console.h> 271da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 281da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds/* Don't take this from <ctype.h>: 011-015 on the screen aren't spaces */ 291da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define isspace(c) ((c) == ' ') 301da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 311da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsextern void poke_blanked_console(void); 321da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 33079c9534a96da9a85a2a2f9715851050fbfbf749Alan Cox/* FIXME: all this needs locking */ 341da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds/* Variables for selection control. */ 351da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds/* Use a dynamic buffer, instead of static (Dec 1994) */ 36ca9bda00b4aafc42cd3d1b9d32934463e2993b4cAlan Coxstruct vc_data *sel_cons; /* must not be deallocated */ 37759448f459234bfcf34b82471f0dba77a9aca498Jan Engelhardtstatic int use_unicode; 381da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic volatile int sel_start = -1; /* cleared by clear_selection */ 391da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic int sel_end; 401da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic int sel_buffer_lth; 411da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic char *sel_buffer; 421da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 431da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds/* clear_selection, highlight and highlight_pointer can be called 441da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds from interrupt (via scrollback/front) */ 451da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 461da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds/* set reverse video on characters s-e of console with selection. */ 471da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic inline void highlight(const int s, const int e) 481da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 491da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds invert_screen(sel_cons, s, e-s+2, 1); 501da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 511da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 521da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds/* use complementary color to show the pointer */ 531da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic inline void highlight_pointer(const int where) 541da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 551da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds complement_pos(sel_cons, where); 561da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 571da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 58759448f459234bfcf34b82471f0dba77a9aca498Jan Engelhardtstatic u16 591da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldssel_pos(int n) 601da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 61759448f459234bfcf34b82471f0dba77a9aca498Jan Engelhardt return inverse_translate(sel_cons, screen_glyph(sel_cons, n), 62759448f459234bfcf34b82471f0dba77a9aca498Jan Engelhardt use_unicode); 631da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 641da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 655289475d1375017ab4288b276383e9684280876dAlan Cox/** 665289475d1375017ab4288b276383e9684280876dAlan Cox * clear_selection - remove current selection 675289475d1375017ab4288b276383e9684280876dAlan Cox * 685289475d1375017ab4288b276383e9684280876dAlan Cox * Remove the current selection highlight, if any from the console 695289475d1375017ab4288b276383e9684280876dAlan Cox * holding the selection. The caller must hold the console lock. 705289475d1375017ab4288b276383e9684280876dAlan Cox */ 715289475d1375017ab4288b276383e9684280876dAlan Coxvoid clear_selection(void) 725289475d1375017ab4288b276383e9684280876dAlan Cox{ 731da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds highlight_pointer(-1); /* hide the pointer */ 741da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (sel_start != -1) { 751da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds highlight(sel_start, sel_end); 761da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds sel_start = -1; 771da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 781da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 791da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 801da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds/* 811da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * User settable table: what characters are to be considered alphabetic? 825289475d1375017ab4288b276383e9684280876dAlan Cox * 256 bits. Locked by the console lock. 831da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds */ 841da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic u32 inwordLut[8]={ 851da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 0x00000000, /* control chars */ 861da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 0x03FF0000, /* digits */ 871da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 0x87FFFFFE, /* uppercase and '_' */ 881da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 0x07FFFFFE, /* lowercase */ 891da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 0x00000000, 901da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 0x00000000, 911da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 0xFF7FFFFF, /* latin-1 accented letters, not multiplication sign */ 921da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 0xFF7FFFFF /* latin-1 accented letters, not division sign */ 931da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds}; 941da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 95759448f459234bfcf34b82471f0dba77a9aca498Jan Engelhardtstatic inline int inword(const u16 c) { 96759448f459234bfcf34b82471f0dba77a9aca498Jan Engelhardt return c > 0xff || (( inwordLut[c>>5] >> (c & 0x1F) ) & 1); 971da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 981da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 995289475d1375017ab4288b276383e9684280876dAlan Cox/** 1005289475d1375017ab4288b276383e9684280876dAlan Cox * set loadlut - load the LUT table 1015289475d1375017ab4288b276383e9684280876dAlan Cox * @p: user table 1025289475d1375017ab4288b276383e9684280876dAlan Cox * 1035289475d1375017ab4288b276383e9684280876dAlan Cox * Load the LUT table from user space. The caller must hold the console 1045289475d1375017ab4288b276383e9684280876dAlan Cox * lock. Make a temporary copy so a partial update doesn't make a mess. 1055289475d1375017ab4288b276383e9684280876dAlan Cox */ 1061da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsint sel_loadlut(char __user *p) 1071da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 1085289475d1375017ab4288b276383e9684280876dAlan Cox u32 tmplut[8]; 1095289475d1375017ab4288b276383e9684280876dAlan Cox if (copy_from_user(tmplut, (u32 __user *)(p+4), 32)) 1105289475d1375017ab4288b276383e9684280876dAlan Cox return -EFAULT; 1115289475d1375017ab4288b276383e9684280876dAlan Cox memcpy(inwordLut, tmplut, 32); 1125289475d1375017ab4288b276383e9684280876dAlan Cox return 0; 1131da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 1141da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 1151da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds/* does screen address p correspond to character at LH/RH edge of screen? */ 1161da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic inline int atedge(const int p, int size_row) 1171da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 1181da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return (!(p % size_row) || !((p + 2) % size_row)); 1191da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 1201da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 1211da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds/* constrain v such that v <= u */ 1221da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic inline unsigned short limit(const unsigned short v, const unsigned short u) 1231da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 1241da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return (v > u) ? u : v; 1251da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 1261da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 127759448f459234bfcf34b82471f0dba77a9aca498Jan Engelhardt/* stores the char in UTF8 and returns the number of bytes used (1-3) */ 128759448f459234bfcf34b82471f0dba77a9aca498Jan Engelhardtstatic int store_utf8(u16 c, char *p) 129759448f459234bfcf34b82471f0dba77a9aca498Jan Engelhardt{ 130759448f459234bfcf34b82471f0dba77a9aca498Jan Engelhardt if (c < 0x80) { 131759448f459234bfcf34b82471f0dba77a9aca498Jan Engelhardt /* 0******* */ 132759448f459234bfcf34b82471f0dba77a9aca498Jan Engelhardt p[0] = c; 133759448f459234bfcf34b82471f0dba77a9aca498Jan Engelhardt return 1; 134759448f459234bfcf34b82471f0dba77a9aca498Jan Engelhardt } else if (c < 0x800) { 135759448f459234bfcf34b82471f0dba77a9aca498Jan Engelhardt /* 110***** 10****** */ 136759448f459234bfcf34b82471f0dba77a9aca498Jan Engelhardt p[0] = 0xc0 | (c >> 6); 137759448f459234bfcf34b82471f0dba77a9aca498Jan Engelhardt p[1] = 0x80 | (c & 0x3f); 138759448f459234bfcf34b82471f0dba77a9aca498Jan Engelhardt return 2; 139759448f459234bfcf34b82471f0dba77a9aca498Jan Engelhardt } else { 140759448f459234bfcf34b82471f0dba77a9aca498Jan Engelhardt /* 1110**** 10****** 10****** */ 141759448f459234bfcf34b82471f0dba77a9aca498Jan Engelhardt p[0] = 0xe0 | (c >> 12); 142759448f459234bfcf34b82471f0dba77a9aca498Jan Engelhardt p[1] = 0x80 | ((c >> 6) & 0x3f); 143759448f459234bfcf34b82471f0dba77a9aca498Jan Engelhardt p[2] = 0x80 | (c & 0x3f); 144759448f459234bfcf34b82471f0dba77a9aca498Jan Engelhardt return 3; 145759448f459234bfcf34b82471f0dba77a9aca498Jan Engelhardt } 146759448f459234bfcf34b82471f0dba77a9aca498Jan Engelhardt} 147759448f459234bfcf34b82471f0dba77a9aca498Jan Engelhardt 1485289475d1375017ab4288b276383e9684280876dAlan Cox/** 1495289475d1375017ab4288b276383e9684280876dAlan Cox * set_selection - set the current selection. 1505289475d1375017ab4288b276383e9684280876dAlan Cox * @sel: user selection info 1515289475d1375017ab4288b276383e9684280876dAlan Cox * @tty: the console tty 1525289475d1375017ab4288b276383e9684280876dAlan Cox * 1535289475d1375017ab4288b276383e9684280876dAlan Cox * Invoked by the ioctl handle for the vt layer. 1545289475d1375017ab4288b276383e9684280876dAlan Cox * 1555289475d1375017ab4288b276383e9684280876dAlan Cox * The entire selection process is managed under the console_lock. It's 1565289475d1375017ab4288b276383e9684280876dAlan Cox * a lot under the lock but its hardly a performance path 1575289475d1375017ab4288b276383e9684280876dAlan Cox */ 1581da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsint set_selection(const struct tiocl_selection __user *sel, struct tty_struct *tty) 1591da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 1601da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct vc_data *vc = vc_cons[fg_console].d; 1611da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds int sel_mode, new_sel_start, new_sel_end, spc; 1621da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds char *bp, *obp; 163759448f459234bfcf34b82471f0dba77a9aca498Jan Engelhardt int i, ps, pe, multiplier; 164759448f459234bfcf34b82471f0dba77a9aca498Jan Engelhardt u16 c; 165079c9534a96da9a85a2a2f9715851050fbfbf749Alan Cox int mode; 1661da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 1671da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds poke_blanked_console(); 1681da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 1691da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds { unsigned short xs, ys, xe, ye; 1701da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 1711da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (!access_ok(VERIFY_READ, sel, sizeof(*sel))) 1721da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return -EFAULT; 1731da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds __get_user(xs, &sel->xs); 1741da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds __get_user(ys, &sel->ys); 1751da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds __get_user(xe, &sel->xe); 1761da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds __get_user(ye, &sel->ye); 1771da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds __get_user(sel_mode, &sel->sel_mode); 1781da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds xs--; ys--; xe--; ye--; 1791da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds xs = limit(xs, vc->vc_cols - 1); 1801da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds ys = limit(ys, vc->vc_rows - 1); 1811da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds xe = limit(xe, vc->vc_cols - 1); 1821da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds ye = limit(ye, vc->vc_rows - 1); 1831da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds ps = ys * vc->vc_size_row + (xs << 1); 1841da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds pe = ye * vc->vc_size_row + (xe << 1); 1851da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 1861da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (sel_mode == TIOCL_SELCLEAR) { 1871da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* useful for screendump without selection highlights */ 1881da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds clear_selection(); 1891da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return 0; 1901da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 1911da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 1921da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (mouse_reporting() && (sel_mode & TIOCL_SELMOUSEREPORT)) { 1931da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds mouse_report(tty, sel_mode & TIOCL_SELBUTTONMASK, xs, ys); 1941da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return 0; 1951da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 1961da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 1971da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 1981da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (ps > pe) /* make sel_start <= sel_end */ 1991da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds { 2001da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds int tmp = ps; 2011da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds ps = pe; 2021da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds pe = tmp; 2031da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 2041da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 2051da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (sel_cons != vc_cons[fg_console].d) { 2061da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds clear_selection(); 2071da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds sel_cons = vc_cons[fg_console].d; 2081da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 209079c9534a96da9a85a2a2f9715851050fbfbf749Alan Cox mode = vt_do_kdgkbmode(fg_console); 210079c9534a96da9a85a2a2f9715851050fbfbf749Alan Cox if (mode == K_UNICODE) 211079c9534a96da9a85a2a2f9715851050fbfbf749Alan Cox use_unicode = 1; 212079c9534a96da9a85a2a2f9715851050fbfbf749Alan Cox else 213079c9534a96da9a85a2a2f9715851050fbfbf749Alan Cox use_unicode = 0; 2141da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 2151da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds switch (sel_mode) 2161da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds { 2171da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds case TIOCL_SELCHAR: /* character-by-character selection */ 2181da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds new_sel_start = ps; 2191da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds new_sel_end = pe; 2201da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds break; 2211da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds case TIOCL_SELWORD: /* word-by-word selection */ 2221da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds spc = isspace(sel_pos(ps)); 2231da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds for (new_sel_start = ps; ; ps -= 2) 2241da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds { 2251da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if ((spc && !isspace(sel_pos(ps))) || 2261da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds (!spc && !inword(sel_pos(ps)))) 2271da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds break; 2281da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds new_sel_start = ps; 2291da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (!(ps % vc->vc_size_row)) 2301da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds break; 2311da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 2321da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds spc = isspace(sel_pos(pe)); 2331da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds for (new_sel_end = pe; ; pe += 2) 2341da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds { 2351da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if ((spc && !isspace(sel_pos(pe))) || 2361da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds (!spc && !inword(sel_pos(pe)))) 2371da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds break; 2381da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds new_sel_end = pe; 2391da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (!((pe + 2) % vc->vc_size_row)) 2401da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds break; 2411da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 2421da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds break; 2431da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds case TIOCL_SELLINE: /* line-by-line selection */ 2441da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds new_sel_start = ps - ps % vc->vc_size_row; 2451da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds new_sel_end = pe + vc->vc_size_row 2461da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds - pe % vc->vc_size_row - 2; 2471da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds break; 2481da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds case TIOCL_SELPOINTER: 2491da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds highlight_pointer(pe); 2501da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return 0; 2511da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds default: 2521da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return -EINVAL; 2531da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 2541da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 2551da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* remove the pointer */ 2561da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds highlight_pointer(-1); 2571da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 2581da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* select to end of line if on trailing space */ 2591da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (new_sel_end > new_sel_start && 2601da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds !atedge(new_sel_end, vc->vc_size_row) && 2611da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds isspace(sel_pos(new_sel_end))) { 2621da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds for (pe = new_sel_end + 2; ; pe += 2) 2631da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (!isspace(sel_pos(pe)) || 2641da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds atedge(pe, vc->vc_size_row)) 2651da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds break; 2661da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (isspace(sel_pos(pe))) 2671da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds new_sel_end = pe; 2681da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 2691da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (sel_start == -1) /* no current selection */ 2701da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds highlight(new_sel_start, new_sel_end); 2711da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds else if (new_sel_start == sel_start) 2721da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds { 2731da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (new_sel_end == sel_end) /* no action required */ 2741da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return 0; 2751da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds else if (new_sel_end > sel_end) /* extend to right */ 2761da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds highlight(sel_end + 2, new_sel_end); 2771da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds else /* contract from right */ 2781da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds highlight(new_sel_end + 2, sel_end); 2791da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 2801da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds else if (new_sel_end == sel_end) 2811da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds { 2821da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (new_sel_start < sel_start) /* extend to left */ 2831da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds highlight(new_sel_start, sel_start - 2); 2841da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds else /* contract from left */ 2851da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds highlight(sel_start, new_sel_start - 2); 2861da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 2871da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds else /* some other case; start selection from scratch */ 2881da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds { 2891da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds clear_selection(); 2901da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds highlight(new_sel_start, new_sel_end); 2911da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 2921da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds sel_start = new_sel_start; 2931da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds sel_end = new_sel_end; 2941da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 2951da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* Allocate a new buffer before freeing the old one ... */ 296759448f459234bfcf34b82471f0dba77a9aca498Jan Engelhardt multiplier = use_unicode ? 3 : 1; /* chars can take up to 3 bytes */ 297878b8619f711280fd05845e21956434b5e588cc4Mikulas Patocka bp = kmalloc(((sel_end-sel_start)/2+1)*multiplier, GFP_KERNEL); 2981da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (!bp) { 2991da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds printk(KERN_WARNING "selection: kmalloc() failed\n"); 3001da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds clear_selection(); 3011da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return -ENOMEM; 3021da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 303735d5661d5c5f023a78fbe68e771e261040ff1b7Jesper Juhl kfree(sel_buffer); 3041da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds sel_buffer = bp; 3051da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 3061da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds obp = bp; 3071da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds for (i = sel_start; i <= sel_end; i += 2) { 308759448f459234bfcf34b82471f0dba77a9aca498Jan Engelhardt c = sel_pos(i); 309759448f459234bfcf34b82471f0dba77a9aca498Jan Engelhardt if (use_unicode) 310759448f459234bfcf34b82471f0dba77a9aca498Jan Engelhardt bp += store_utf8(c, bp); 311759448f459234bfcf34b82471f0dba77a9aca498Jan Engelhardt else 312759448f459234bfcf34b82471f0dba77a9aca498Jan Engelhardt *bp++ = c; 313759448f459234bfcf34b82471f0dba77a9aca498Jan Engelhardt if (!isspace(c)) 3141da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds obp = bp; 3151da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (! ((i + 2) % vc->vc_size_row)) { 3161da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* strip trailing blanks from line and add newline, 3171da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds unless non-space at end of line. */ 3181da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (obp != bp) { 3191da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds bp = obp; 3201da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds *bp++ = '\r'; 3211da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 3221da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds obp = bp; 3231da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 3241da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 3251da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds sel_buffer_lth = bp - sel_buffer; 3261da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return 0; 3271da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 3281da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 3291da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds/* Insert the contents of the selection buffer into the 3301da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * queue of the tty associated with the current console. 3311da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * Invoked by ioctl(). 332906cbe1364d94da7cbf74c1d05e3e78b2883f661Jiri Slaby * 33320f62579dccc84428554b914e24a312a6554f841Alan Cox * Locking: called without locks. Calls the ldisc wrongly with 33420f62579dccc84428554b914e24a312a6554f841Alan Cox * unsafe methods, 3351da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds */ 3361da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsint paste_selection(struct tty_struct *tty) 3371da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 338c9f19e96a2f33cd56c2bd19f87a0c4982d011c2bAlan Cox struct vc_data *vc = tty->driver_data; 33933f0f88f1c51ae5c2d593d26960c760ea154c2e2Alan Cox int pasted = 0; 34033f0f88f1c51ae5c2d593d26960c760ea154c2e2Alan Cox unsigned int count; 3411da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct tty_ldisc *ld; 3421da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds DECLARE_WAITQUEUE(wait, current); 3431da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 344e33ac1c10b6baaac68d18d931e120d8b96e8c5f8Alan Cox 345ac751efa6a0d70f2c9daef5c7e3a92270f5c2dffTorben Hohn console_lock(); 3461da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds poke_blanked_console(); 347ac751efa6a0d70f2c9daef5c7e3a92270f5c2dffTorben Hohn console_unlock(); 3481da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 34920f62579dccc84428554b914e24a312a6554f841Alan Cox /* FIXME: wtf is this supposed to achieve ? */ 35060af22d2ed490554cc92c8d0fed0b5b9cf687568Arnd Bergmann ld = tty_ldisc_ref(tty); 35120f62579dccc84428554b914e24a312a6554f841Alan Cox if (!ld) 35260af22d2ed490554cc92c8d0fed0b5b9cf687568Arnd Bergmann ld = tty_ldisc_ref_wait(tty); 35360af22d2ed490554cc92c8d0fed0b5b9cf687568Arnd Bergmann 35420f62579dccc84428554b914e24a312a6554f841Alan Cox /* FIXME: this is completely unsafe */ 3551da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds add_wait_queue(&vc->paste_wait, &wait); 3561da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds while (sel_buffer && sel_buffer_lth > pasted) { 3571da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds set_current_state(TASK_INTERRUPTIBLE); 3581da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (test_bit(TTY_THROTTLED, &tty->flags)) { 3591da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds schedule(); 3601da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds continue; 3611da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 3621da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds count = sel_buffer_lth - pasted; 36355db4c64eddf37e31279ec15fe90314713bc9cfaLinus Torvalds count = min(count, tty->receive_room); 36455db4c64eddf37e31279ec15fe90314713bc9cfaLinus Torvalds tty->ldisc->ops->receive_buf(tty, sel_buffer + pasted, 365a352def21a642133758b868c71bee12ab34ad5c5Alan Cox NULL, count); 3661da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds pasted += count; 3671da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 3681da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds remove_wait_queue(&vc->paste_wait, &wait); 369cc0a8fbb7ce00f65dc337dd91389b7151f44ed30Milind Arun Choudhary __set_current_state(TASK_RUNNING); 3701da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 3711da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds tty_ldisc_deref(ld); 3721da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return 0; 3731da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 374