Update of /cvsroot/arcem/arcem
In directory vz-cvs-4.sog:/tmp/cvs-serv11622
Modified Files:
Tag: arcem-fast
arminit.c hostfs.c
Log Message:
HostFS fixes and improvements
* arminit.c - Cope properly with the unlikely event of finding a SWI
instruction at 0x0 or 0x4
* arch/filecommon.c - Fixed the new file caching code being broken when
reading/writing more data than will fit inside the file buffer (1MB)
* hostfs.c, support_modules/hostfs/hostfs,ffa, support/hostfs/hostfs.s -
Improved error detection and reporting. Failsafe error of HOSTFS_ERROR_UNKNOWN
is used if we can't find a specific error to return.
Index: arminit.c
===================================================================
RCS file: /cvsroot/arcem/arcem/arminit.c,v
retrieving revision 1.8.2.6
retrieving revision 1.8.2.7
diff -u -d -r1.8.2.6 -r1.8.2.7
--- arminit.c 27 Oct 2011 20:57:31 -0000 1.8.2.6
+++ arminit.c 5 Nov 2011 17:47:14 -0000 1.8.2.7
@@ -174,7 +174,7 @@
case ARMul_SWIV: /* Software Interrupt */
{
- ARMword addr = ARMul_GetPC(state)-8;
+ ARMword addr = (state->Reg[15]-8) & R15PCBITS;
FastMapEntry *entry = FastMap_GetEntryNoWrap(state,addr);
FastMapRes res = FastMap_DecodeRead(entry,state->FastMapMode);
ARMword instr;
Index: hostfs.c
===================================================================
RCS file: /cvsroot/arcem/arcem/hostfs.c,v
retrieving revision 1.17.2.10
retrieving revision 1.17.2.11
diff -u -d -r1.17.2.10 -r1.17.2.11
--- hostfs.c 30 Oct 2011 17:42:22 -0000 1.17.2.10
+++ hostfs.c 5 Nov 2011 17:47:14 -0000 1.17.2.11
@@ -128,11 +128,14 @@
enum FILECORE_ERROR {
FILECORE_ERROR_BADRENAME = 0xb0,
FILECORE_ERROR_DIRNOTEMPTY = 0xb4,
+ FILECORE_ERROR_ACCESS = 0xbd,
FILECORE_ERROR_TOOMANYOPEN = 0xc0, /* Too many open files */
FILECORE_ERROR_OPEN = 0xc2, /* File open */
FILECORE_ERROR_LOCKED = 0xc3,
FILECORE_ERROR_EXISTS = 0xc4, /* Already exists */
FILECORE_ERROR_DISCFULL = 0xc6,
+ FILECORE_ERROR_NOTFOUND = 0xd6, /* Not found */
+ HOSTFS_ERROR_UNKNOWN = 0x100, /* Not a filecore error, but causes
HostFS to return 'an unknown error occured' */
};
enum RISC_OS_FILE_TYPE {
@@ -166,8 +169,6 @@
#define MAX_OPEN_FILES 255
-#define NOT_IMPLEMENTED 255
-
#define DEFAULT_ATTRIBUTES 0x03
#define DEFAULT_FILE_TYPE RISC_OS_FILE_TYPE_TEXT
#define MINIMUM_BUFFER_SIZE 32768
@@ -202,6 +203,53 @@
path_construct(const char *old_path, const char *ro_path,
char *new_path, size_t len, ARMword load, ARMword exec);
+static ARMword
+errno_to_hostfs_error(const char *filename,const char *function,const char *op)
+{
+ switch(errno) {
+ case ENOMEM: /* Out of memory */
+ fprintf(stderr, "HostFS out of memory in %s:
\'%s\'\n",function,strerror(errno));
+ exit(EXIT_FAILURE);
+ break;
+
+ case ENOENT: /* Object not found */
+ return FILECORE_ERROR_NOTFOUND;
+
+ case EACCES: /* Access violation */
+ case EPERM:
+ return FILECORE_ERROR_ACCESS;
+
+ case EEXIST:
+ case ENOTEMPTY: /* POSIX permits either error for directory not empty */
+ return FILECORE_ERROR_DIRNOTEMPTY;
+
+ case ENOSPC: /* No space for the directory (either physical or quota) */
+ return FILECORE_ERROR_DISCFULL;
+
+#ifdef __riscos__
+ case EOPSYS: /* RISC OS error */
+ {
+ _kernel_oserror *err = _kernel_last_oserror();
+ if(err && ((err->errnum >> 16) == 1) && ((err->errnum & 0xff) >= 0xb0))
+ {
+ /* Filesystem error, in the range HostFS will accept. Return it
directly. */
+ return err->errnum & 0xff;
+ }
+ else
+ {
+ fprintf(stderr,"%s() could not %s '%s': %s
%d\n",function,op,filename,strerror(errno),errno);
+ return HOSTFS_ERROR_UNKNOWN;
+ }
+ }
+#endif
+
+ default:
+ fprintf(stderr,"%s() could not %s '%s': %s
%d\n",function,op,filename,strerror(errno),errno);
+ return HOSTFS_ERROR_UNKNOWN;
+ }
+}
+
+
/**
* @param buffer_size_needed Required buffer
*/
@@ -934,23 +982,9 @@
/* Check for errors from opening the file */
if (open_file[idx] == NULL) {
- switch (errno) {
- case ENOMEM: /* Out of memory */
- fprintf(stderr, "HostFS out of memory in hostfs_open(): \'%s\'\n",
- strerror(errno));
- exit(EXIT_FAILURE);
- break;
-
- case ENOENT: /* File not found */
- state->Reg[1] = 0; /* Signal to RISC OS file not found */
- return;
-
- default:
- dbug_hostfs("HostFS could not open file \'%s\': %s %d\n",
- host_pathname, strerror(errno), errno);
- state->Reg[1] = 0; /* Signal to RISC OS file not found */
- return;
- }
+ state->Reg[1] = 0; /* Signal to RISC OS file not found */
+ state->Reg[9] = errno_to_hostfs_error(host_pathname,__FUNCTION__,"open");
+ return;
}
/* Find the extent of the file */
@@ -958,6 +992,8 @@
state->Reg[3] = (ARMword) ftello64(open_file[idx]);
rewind(open_file[idx]); /* Return to start */
+ dbug_hostfs("\tFile opened OK, handle %u, size %u\n",idx,state->Reg[3]);
+
state->Reg[1] = idx; /* Our filing system's handle */
state->Reg[2] = 1024; /* Buffer size to use in range 64-1024.
Must be power of 2 */
@@ -1209,27 +1245,24 @@
new_pathname, sizeof(new_pathname),
state->Reg[2], state->Reg[3]);
if (rename(host_pathname, new_pathname)) {
- fprintf(stderr, "hostfs_file_7_create_file(): could not rename \'%s\'"
- " to \'%s\': %s %d\n", host_pathname, new_pathname,
- strerror(errno), errno);
+ state->Reg[9] =
errno_to_hostfs_error(host_pathname,__FUNCTION__,"rename");
return;
}
break;
case OBJECT_TYPE_DIRECTORY:
/* TODO Find a suitable error */
+ state->Reg[9] = HOSTFS_ERROR_UNKNOWN;
return;
}
f = fopen64(new_pathname, "wb");
if (!f) {
- /* TODO handle errors */
- fprintf(stderr, "HostFS could not create file \'%s\': %s %d\n",
- new_pathname, strerror(errno), errno);
+ state->Reg[9] = errno_to_hostfs_error(new_pathname,__FUNCTION__,"open");
return;
}
- size_t bytes_written;
+ size_t bytes_written=0;
if (with_data) {
bytes_written = File_WriteRAM(f,ptr,length);
} else {
@@ -1247,7 +1280,12 @@
}
}
- /* TODO - Check for errors */
+ if(bytes_written != length)
+ {
+ fprintf(stderr,"hostfs_write_file(): Failed to write full extent of
file\n");
+ /* TODO - Examine errno? */
+ state->Reg[9] = HOSTFS_ERROR_UNKNOWN;
+ }
fclose(f); /* TODO check for errors */
@@ -1355,7 +1393,10 @@
get_string(state, state->Reg[1], ro_path, sizeof(ro_path));
dbug_hostfs("\tPATH = %s\n", ro_path);
- /* TODO Ensure we do not try to delete the root object: i.e. $ */
+ /* Prevent being asked to delete root directory */
+ if (STREQ(ro_path, "$")) {
+ return;
+ }
hostfs_path_process(ro_path, host_pathname, &object_info);
@@ -1373,26 +1414,13 @@
switch (object_info.type) {
case OBJECT_TYPE_FILE:
if (unlink(host_pathname)) {
- /* Error while deleting the file */
- fprintf(stderr, "HostFS: Error deleting file \'%s\': %s %d\n",
- host_pathname, strerror(errno), errno);
+ state->Reg[9] = errno_to_hostfs_error(host_pathname,__FUNCTION__,"delete
file");
}
break;
case OBJECT_TYPE_DIRECTORY:
if (rmdir(host_pathname)) {
- /* Error while deleting the directory */
- switch (errno) {
- case EEXIST:
- case ENOTEMPTY: /* POSIX permits either error for directory not empty */
- state->Reg[9] = FILECORE_ERROR_DIRNOTEMPTY;
- break;
-
- default:
- fprintf(stderr, "HostFS: Error deleting directory \'%s\': %s %d\n",
- host_pathname, strerror(errno), errno);
- break;
- }
+ state->Reg[9] = errno_to_hostfs_error(host_pathname,__FUNCTION__,"delete
directory");
}
break;
@@ -1469,22 +1497,7 @@
/* Create directory */
if (mkdir(host_pathname, 0777)) {
- /* An error occurred whilst creating the directory */
-
- switch (errno) {
- case EEXIST:
- /* The object exists (not necessarily as a directory) - does it matter
that it could be a file? TODO */
- return; /* Return with no error */
-
- case ENOSPC: /* No space for the directory (either physical or quota) */
- state->Reg[9] = FILECORE_ERROR_DISCFULL;
- return;
-
- default:
- fprintf(stderr, "HostFS could not create directory \'%s\': %s\n",
- host_pathname, strerror(errno));
- return;
- }
+ state->Reg[9] = errno_to_hostfs_error(host_pathname,__FUNCTION__,"create
directory");
}
}
@@ -1519,12 +1532,17 @@
f = fopen64(host_pathname, "rb");
if (!f) {
- fprintf(stderr, "HostFS could not open file (File_255) \'%s\': %s %d\n",
- host_pathname, strerror(errno), errno);
+ state->Reg[9] = errno_to_hostfs_error(host_pathname,__FUNCTION__,"open");
return;
}
- File_ReadRAM(f,ptr,state->Reg[4]);
+ ARMword bytes_read = File_ReadRAM(f,ptr,state->Reg[4]);
+ if(bytes_read != state->Reg[4])
+ {
+ fprintf(stderr,"hostfs_file_255_load_file(): Failed to read full extent of
file\n");
+ /* TODO - Examine errno? */
+ state->Reg[9] = HOSTFS_ERROR_UNKNOWN;
+ }
fclose(f);
}
@@ -2022,7 +2040,7 @@
case 11:
dbug_hostfs("\tRead disc name and boot option\n");
- state->Reg[9] = NOT_IMPLEMENTED;
+ state->Reg[9] = HOSTFS_ERROR_UNKNOWN;
break;
case 14:
------------------------------------------------------------------------------
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