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    Contents of /trunk/ghostscript-gpl/patches/ghostscript-gpl-9.18-fix-devijs-account-for-device-subclassing.patch

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    Revision 2734 - (show annotations) (download)
    Thu Dec 3 12:55:33 2015 UTC (8 years, 4 months ago) by niro
    File size: 7291 byte(s) 
    -serveral fixes for 9.18
    1 From: Chris Liddell <chris.liddell@artifex.com>
    2 Date: Fri, 9 Oct 2015 09:54:10 +0000 (+0100)
    3 Subject: Bug 696246: devijs account for device sublassing.
    4 X-Git-Url: http://git.ghostscript.com/?p=ghostpdl.git;a=commitdiff_plain;h=b68e05c3
    5
    6 Bug 696246: devijs account for device sublassing.
    7
    8 The IJS device wasn't coping with the possibility it had been subclassed.
    9
    10 No cluster differences
    11 ---
    12
    13 diff --git a/devices/gdevijs.c b/devices/gdevijs.c
    14 index 5520716..a2e21ea 100644
    15 --- a/devices/gdevijs.c
    16 +++ b/devices/gdevijs.c
    17 @@ -827,6 +827,10 @@ gsijs_open(gx_device *dev)
    18 if (code < 0)
    19 return code;
    20
    21 + while (dev->child)
    22 + dev = dev->child;
    23 + ijsdev = (gx_device_ijs *)dev;
    24 +
    25 if (use_outputfd) {
    26 /* Note: dup() may not be portable to all interesting IJS
    27 platforms. In that case, this branch should be #ifdef'ed out.
    28 From: Chris Liddell <chris.liddell@artifex.com>
    29 Date: Fri, 9 Oct 2015 11:54:44 +0000 (+0100)
    30 Subject: Bug 696246: patch the memory manager fields for sublassed devices.
    31 X-Git-Url: http://git.ghostscript.com/?p=ghostpdl.git;a=commitdiff_plain;h=95553954
    32
    33 Bug 696246: patch the memory manager fields for sublassed devices.
    34
    35 When we subclass a device, we were patching the "visible" type field - that is,
    36 the one referenced directly in the device structure. We were not patching
    37 the type information in the memory object header so, in particular, the
    38 garbage collector could end up calling the wrong methods for the subclassed
    39 device.
    40
    41 No cluster differences.
    42 ---
    43
    44 diff --git a/base/gdevdflt.c b/base/gdevdflt.c
    45 index 5768937..305f89d 100644
    46 --- a/base/gdevdflt.c
    47 +++ b/base/gdevdflt.c
    48 @@ -17,6 +17,8 @@
    49 #include "math_.h"
    50 #include "memory_.h"
    51 #include "gx.h"
    52 +#include "gsstruct.h"
    53 +#include "gxobj.h"
    54 #include "gserrors.h"
    55 #include "gsropt.h"
    56 #include "gxcomp.h"
    57 @@ -26,6 +28,7 @@
    58 #include "gstrans.h" /* For gs_pdf14trans_t */
    59 #include "gxistate.h" /* for gs_image_state_s */
    60
    61 +
    62 /* defined in gsdpram.c */
    63 int gx_default_get_param(gx_device *dev, char *Param, void *list);
    64
    65 @@ -1294,6 +1297,11 @@ int gx_device_subclass(gx_device *dev_to_subclass, gx_device *new_prototype, uns
    66 ptr1 = ((char *)new_prototype) + sizeof(gx_device);
    67 memcpy(ptr, ptr1, new_prototype->params_size - sizeof(gx_device));
    68
    69 + /* We have to patch up the "type" parameters that the memory manage/garbage
    70 + * collector will use, as well.
    71 + */
    72 + (((obj_header_t *)dev_to_subclass) - 1)->o_type = new_prototype->stype;
    73 +
    74 /* If the original device's stype structure was dynamically allocated, we need
    75 * to 'fixup' the contents, it's procs need to point to the new device's procs
    76 * for instance.
    77 diff --git a/base/lib.mak b/base/lib.mak
    78 index de78333..09b70e5 100644
    79 --- a/base/lib.mak
    80 +++ b/base/lib.mak
    81 @@ -1210,7 +1210,7 @@ $(GLOBJ)gdevdsha.$(OBJ) : $(GLSRC)gdevdsha.c $(AK) $(gx_h)\
    82
    83 $(GLOBJ)gdevdflt.$(OBJ) : $(GLSRC)gdevdflt.c $(AK) $(gx_h)\
    84 $(gserrors_h) $(gsropt_h) $(gxcomp_h) $(gxdevice_h) $(gxdevsop_h) $(math__h)\
    85 - $(MAKEDIRS)
    86 + $(gsstruct_h) $(gxobj_h) $(MAKEDIRS)
    87 $(GLCC) $(GLO_)gdevdflt.$(OBJ) $(C_) $(GLSRC)gdevdflt.c
    88
    89 $(GLOBJ)gdevdgbr.$(OBJ) : $(GLSRC)gdevdgbr.c $(AK) $(gx_h)\
    90 From 007bd77d08d800e6b07274d62e3c91be7c4a3f47 Mon Sep 17 00:00:00 2001
    91 From: Ken Sharp <ken.sharp@artifex.com>
    92 Date: Mon, 12 Oct 2015 16:36:11 +0100
    93 Subject: [PATCH] Guard against NULL 'base' for non-clist devices
    94
    95 Bug #696246 "Ghostscript 9.18 with -dFirstPage/-dLastPage fails for ijs and some x11 devices"
    96
    97 This is actually for the plib device. This device is currently (this will
    98 change in the next commit) set to BandingAuto, despite the fact that the
    99 device only works in banding mode.
    100
    101 This can lead to use arriving in gdev_mem_open_scan_lines with all of
    102 mdev->bitmap_memory, mdev->line_pointers_memory and mdev->base being set to
    103 NULL. The code didn't check and assumed that mdev->base was valid, which
    104 led to a later seg fault.
    105
    106 Here we just check to make sure it isn't NULL and return an error if it is.
    107 This doesn't prevent the possibility of garbage uninitialised values, but
    108 there's not much we can do to check that at this stage, devices are supposed
    109 to be initialised to 0 so this 'shouldn't' happen.
    110
    111 No differences expected.
    112 ---
    113 base/gdevmem.c | 3 +++
    114 1 file changed, 3 insertions(+)
    115
    116 diff --git a/base/gdevmem.c b/base/gdevmem.c
    117 index 3019451f..507fa19 100644
    118 --- a/base/gdevmem.c
    119 +++ b/base/gdevmem.c
    120 @@ -471,6 +471,9 @@ gdev_mem_open_scan_lines(gx_device_memory *mdev, int setup_height)
    121 line_pointers_adjacent = false;
    122 }
    123 if (line_pointers_adjacent) {
    124 + if (mdev->base == 0)
    125 + return_error(gs_error_rangecheck);
    126 +
    127 gdev_mem_bits_size(mdev, mdev->width, mdev->height, &size);
    128 mdev->line_ptrs = (byte **)(mdev->base + size);
    129 }
    130 --
    131 2.5.1
    132
    133 From 1bdbe4f87dc57648821e613ebcc591b84e8b35b3 Mon Sep 17 00:00:00 2001
    134 From: Ken Sharp <ken.sharp@artifex.com>
    135 Date: Mon, 12 Oct 2015 16:38:09 +0100
    136 Subject: [PATCH] Ensure plib devices always use the clist
    137
    138 Bug #696246 "Ghostscript 9.18 with -dFirstPage/-dLastPage fails for ijs and some x11 devices"
    139
    140 the plib* class of devices only work if clist is present, but previously
    141 they left the banding_type set to 'auto', which meant that under some
    142 conditions we did not use the clist, leading to a seg fault.
    143
    144 This commit simply forces banding_type to be 'BandingAlways'.
    145
    146 No differences expected.
    147 ---
    148 devices/gdevplib.c | 2 ++
    149 1 file changed, 2 insertions(+)
    150
    151 diff --git a/devices/gdevplib.c b/devices/gdevplib.c
    152 index 51bd7ea..87c6f46 100644
    153 --- a/devices/gdevplib.c
    154 +++ b/devices/gdevplib.c
    155 @@ -691,6 +691,8 @@ plib_open(gx_device * pdev)
    156 bdev->printer_procs.buf_procs.size_buf_device = plib_size_buf_device;
    157 pdev->is_planar = 1;
    158
    159 + bdev->space_params.banding_type = BandingAlways;
    160 +
    161 /* You might expect us to call gdev_prn_open_planar rather than
    162 * gdev_prn_open, but if we do that, it overwrites the 2 function
    163 * pointers we've just overwritten! */
    164 --
    165 2.5.1
    166
    167 From 5571ddfa377c5d7d98f55af40e693814ac287ae4 Mon Sep 17 00:00:00 2001
    168 From: Ken Sharp <ken.sharp@artifex.com>
    169 Date: Mon, 12 Oct 2015 16:40:10 +0100
    170 Subject: [PATCH] prevent rinkj device crash when misconfigured (no SetupFile)
    171
    172 Bug #696246 "Ghostscript 9.18 with -dFirstPage/-dLastPage fails for ijs and some x11 devices"
    173
    174 The rinkj device requires a SetupFile to be given as a device parameter,
    175 however it doesn't actually check to see if one is given, and just tries
    176 to open the filename, with a predictable crash when none is given.
    177
    178 Here we check the filename and attempt to ensure it is both present and
    179 minimally valid.
    180
    181 No differences expected.
    182 ---
    183 devices/gdevrinkj.c | 4 ++++
    184 1 file changed, 4 insertions(+)
    185
    186 diff --git a/devices/gdevrinkj.c b/devices/gdevrinkj.c
    187 index f55bc60..12c396a 100644
    188 --- a/devices/gdevrinkj.c
    189 +++ b/devices/gdevrinkj.c
    190 @@ -1193,6 +1193,10 @@ rinkj_print_page(gx_device_printer *pdev, FILE *file)
    191 int code = 0;
    192 RinkjDevice *cmyk_dev;
    193
    194 + if (rdev->setup_fn == 0 || rdev->setup_fn[0] == 0) {
    195 + emprintf(rdev->memory, "Error, SetupFile not defined, output aborted\n");
    196 + return 0;
    197 + }
    198 cmyk_dev = rinkj_init(rdev, file);
    199 if (cmyk_dev == 0)
    200 return gs_note_error(gs_error_ioerror);
    201 --
    202 2.5.1
    203