From 31fd4c5654595a4763e492e4ec26f66ca3a8a405 Mon Sep 17 00:00:00 2001 From: marha Date: Mon, 4 Nov 2013 12:08:23 +0100 Subject: libxtrans fontconfig mesa xserver pixman xkbcomp git update 4 nov 2013 xserver commit 33c85beed521c9db140cadd8c5aa9992398ee1fe xkbcomp commit e3e6e938535532bfad175c1635256ab7fb3ac943 pixman commit 8cbc7da4e525c96a8e089e4c1baee75dc8315218 libxtrans commit 1fb0fd555a16dd8fce4abc6d3fd22b315f46762a fontconfig commit 767108aa1327cf0156dfc6f024dbc8fb783ae067 mesa commit 2f896627175384fd5943f21804700a155ba4e8a0 --- xorg-server/Xext/shm.c | 168 +++++++++++++++++++++++++++++++++++++++++++++---- 1 file changed, 156 insertions(+), 12 deletions(-) (limited to 'xorg-server/Xext/shm.c') diff --git a/xorg-server/Xext/shm.c b/xorg-server/Xext/shm.c index 55960907b..1a70260fb 100644 --- a/xorg-server/Xext/shm.c +++ b/xorg-server/Xext/shm.c @@ -53,6 +53,7 @@ in this Software without prior written authorization from The Open Group. #include "xace.h" #include #include +#include #include "protocol-versions.h" /* Needed for Solaris cross-zone shared memory extension */ @@ -89,15 +90,6 @@ in this Software without prior written authorization from The Open Group. #include "extinit.h" -typedef struct _ShmDesc { - struct _ShmDesc *next; - int shmid; - int refcnt; - char *addr; - Bool writable; - unsigned long size; -} ShmDescRec, *ShmDescPtr; - typedef struct _ShmScrPrivateRec { CloseScreenProcPtr CloseScreen; ShmFuncsPtr shmFuncs; @@ -391,8 +383,10 @@ ProcShmAttach(ClientPtr client) client->errorValue = stuff->readOnly; return BadValue; } - for (shmdesc = Shmsegs; - shmdesc && (shmdesc->shmid != stuff->shmid); shmdesc = shmdesc->next); + for (shmdesc = Shmsegs; shmdesc; shmdesc = shmdesc->next) { + if (!shmdesc->is_fd && shmdesc->shmid == stuff->shmid) + break; + } if (shmdesc) { if (!stuff->readOnly && !shmdesc->writable) return BadAccess; @@ -402,6 +396,7 @@ ProcShmAttach(ClientPtr client) shmdesc = malloc(sizeof(ShmDescRec)); if (!shmdesc) return BadAlloc; + shmdesc->is_fd = FALSE; shmdesc->addr = shmat(stuff->shmid, 0, stuff->readOnly ? SHM_RDONLY : 0); if ((shmdesc->addr == ((char *) -1)) || SHMSTAT(stuff->shmid, &buf)) { @@ -440,7 +435,10 @@ ShmDetachSegment(pointer value, /* must conform to DeleteType */ if (--shmdesc->refcnt) return TRUE; - shmdt(shmdesc->addr); + if (shmdesc->is_fd) + munmap(shmdesc->addr, shmdesc->size); + else + shmdt(shmdesc->addr); for (prev = &Shmsegs; *prev != shmdesc; prev = &(*prev)->next); *prev = shmdesc->next; free(shmdesc); @@ -1096,6 +1094,122 @@ ProcShmCreatePixmap(ClientPtr client) return BadAlloc; } +static int +ProcShmAttachFd(ClientPtr client) +{ + int fd; + ShmDescPtr shmdesc; + REQUEST(xShmAttachFdReq); + struct stat statb; + + SetReqFds(client, 1); + REQUEST_SIZE_MATCH(xShmAttachFdReq); + LEGAL_NEW_RESOURCE(stuff->shmseg, client); + if ((stuff->readOnly != xTrue) && (stuff->readOnly != xFalse)) { + client->errorValue = stuff->readOnly; + return BadValue; + } + fd = ReadFdFromClient(client); + if (fd < 0) + return BadMatch; + + if (fstat(fd, &statb) < 0 || statb.st_size == 0) { + close(fd); + return BadMatch; + } + + shmdesc = malloc(sizeof(ShmDescRec)); + if (!shmdesc) { + close(fd); + return BadAlloc; + } + shmdesc->is_fd = TRUE; + shmdesc->addr = mmap(NULL, statb.st_size, + stuff->readOnly ? PROT_READ : PROT_READ|PROT_WRITE, + MAP_SHARED, + fd, 0); + + close(fd); + if ((shmdesc->addr == ((char *) -1))) { + free(shmdesc); + return BadAccess; + } + + shmdesc->refcnt = 1; + shmdesc->writable = !stuff->readOnly; + shmdesc->size = statb.st_size; + shmdesc->next = Shmsegs; + Shmsegs = shmdesc; + + if (!AddResource(stuff->shmseg, ShmSegType, (pointer) shmdesc)) + return BadAlloc; + return Success; +} + +static int +ProcShmCreateSegment(ClientPtr client) +{ + int fd; + ShmDescPtr shmdesc; + REQUEST(xShmCreateSegmentReq); + xShmCreateSegmentReply rep = { + .type = X_Reply, + .nfd = 1, + .sequenceNumber = client->sequence, + .length = 0, + }; + char template[] = "/tmp/shm-XXXXXX"; + + REQUEST_SIZE_MATCH(xShmCreateSegmentReq); + if ((stuff->readOnly != xTrue) && (stuff->readOnly != xFalse)) { + client->errorValue = stuff->readOnly; + return BadValue; + } + fd = mkstemp(template); + if (fd < 0) + return BadAlloc; + unlink(template); + if (ftruncate(fd, stuff->size) < 0) { + close(fd); + return BadAlloc; + } + shmdesc = malloc(sizeof(ShmDescRec)); + if (!shmdesc) { + close(fd); + return BadAlloc; + } + shmdesc->is_fd = TRUE; + shmdesc->addr = mmap(NULL, stuff->size, + stuff->readOnly ? PROT_READ : PROT_READ|PROT_WRITE, + MAP_SHARED, + fd, 0); + + if ((shmdesc->addr == ((char *) -1))) { + close(fd); + free(shmdesc); + return BadAccess; + } + + shmdesc->refcnt = 1; + shmdesc->writable = !stuff->readOnly; + shmdesc->size = stuff->size; + shmdesc->next = Shmsegs; + Shmsegs = shmdesc; + + if (!AddResource(stuff->shmseg, ShmSegType, (pointer) shmdesc)) { + close(fd); + return BadAlloc; + } + + if (WriteFdToClient(client, fd, TRUE) < 0) { + FreeResource(stuff->shmseg, RT_NONE); + close(fd); + return BadAlloc; + } + WriteToClient(client, sizeof (xShmCreateSegmentReply), &rep); + return Success; +} + static int ProcShmDispatch(ClientPtr client) { @@ -1125,6 +1239,10 @@ ProcShmDispatch(ClientPtr client) return ProcPanoramiXShmCreatePixmap(client); #endif return ProcShmCreatePixmap(client); + case X_ShmAttachFd: + return ProcShmAttachFd(client); + case X_ShmCreateSegment: + return ProcShmCreateSegment(client); default: return BadRequest; } @@ -1225,6 +1343,28 @@ SProcShmCreatePixmap(ClientPtr client) return ProcShmCreatePixmap(client); } +static int +SProcShmAttachFd(ClientPtr client) +{ + REQUEST(xShmAttachFdReq); + SetReqFds(client, 1); + swaps(&stuff->length); + REQUEST_SIZE_MATCH(xShmAttachFdReq); + swapl(&stuff->shmseg); + return ProcShmAttachFd(client); +} + +static int +SProcShmCreateSegment(ClientPtr client) +{ + REQUEST(xShmCreateSegmentReq); + swaps(&stuff->length); + REQUEST_SIZE_MATCH(xShmCreateSegmentReq); + swapl(&stuff->shmseg); + swapl(&stuff->size); + return ProcShmCreateSegment(client); +} + static int SProcShmDispatch(ClientPtr client) { @@ -1242,6 +1382,10 @@ SProcShmDispatch(ClientPtr client) return SProcShmGetImage(client); case X_ShmCreatePixmap: return SProcShmCreatePixmap(client); + case X_ShmAttachFd: + return SProcShmAttachFd(client); + case X_ShmCreateSegment: + return SProcShmCreateSegment(client); default: return BadRequest; } -- cgit v1.2.3