152 lines
3.8 KiB
Python
152 lines
3.8 KiB
Python
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# Opens a file READ/WRITE even on a READONLY filesystem
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# fstype = FAT, FATRO, MFS, MFSRO
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# optype = READ, WRITE
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def ds3_file_access(self, fstype, optype):
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testdir = self.mkworkdir('d')
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self.mkfile("testit.bat", """\
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d:
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%s
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c:\\fileaccs %s
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rem end
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""" % ("rem Internal share" if self.version == "FDPP kernel" else "c:\\share", optype), newline="\r\n")
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# compile sources
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self.mkcom_with_ia16("fileaccs", r"""
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#include <dos.h>
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#include <fcntl.h>
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#include <stdio.h>
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#include <string.h>
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#define FNAME "FOO.DAT"
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#define FDATA "0123456789abcdef\n"
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char ibuf[32];
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void __far __interrupt (*oldint24)(void);
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volatile uint16_t int24_ax;
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void __far __interrupt __attribute__ ((near_section)) myint24(void); /* Prototype */
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__asm (
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"myint24:\n"
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" pushw %bp\n"
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" movw %sp, %bp\n"
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" pushw %ds\n"
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" pushw 22(%bp)\n" /* int21 caller's DS on stack */
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" popw %ds\n"
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" movw %ax, int24_ax\n"
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" popw %ds\n"
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" popw %bp\n"
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" movb $0x03, %al\n" /* 0=Ignore, 1=Retry, 2=Terminate, 3=Fail */
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" iretw\n"
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);
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int main(int argc, char *argv[])
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{
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int handle;
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unsigned int ret, num;
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if (argc < 2) {
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printf("Error: missing optype (READ|WRITE) argument\n");
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return -1;
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}
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// Setup int24 handler
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int24_ax = 0;
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oldint24 = _dos_getvect(0x24);
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_dos_setvect(0x24, myint24);
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ret = _dos_open(FNAME, O_RDWR, &handle);
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if (ret != 0) {
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printf("Error: File Open failed(ret = 0x%02x)\n", ret);
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_dos_setvect(0x24, oldint24);
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return -1;
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}
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printf("Info: File Open success\n");
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if (strcmp(argv[1], "WRITE") == 0) {
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// It's unlikely this write will fail on a write to readonly disk
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// due to DOS buffering, so use commit to force the error.
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printf("Info: About to write\n");
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ret = _dos_write(handle, FDATA, strlen(FDATA), &num);
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if (ret != 0) {
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printf("Info: File Write failed(ret = 0x%02x)\n", ret);
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// The file is in error condition, so _dos_close() causes another int24
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_dos_close(handle);
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_dos_setvect(0x24, oldint24);
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return -1;
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}
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printf("Info: About to commit\n");
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ret = _dos_commit(handle);
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if (ret != 0) {
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printf("Info: File Commit failed(ret=0x%02x, int24_ax=0x%04x)\n", ret, int24_ax);
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// The file is in error condition, so _dos_close() causes another int24
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_dos_close(handle);
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_dos_setvect(0x24, oldint24);
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return -1;
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}
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printf("Info: File Write/Commit success(num=%u)\n", num);
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} else {
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ret = _dos_read(handle, ibuf, strlen(FDATA), &num);
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if (ret != 0) {
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printf("Info: File Read failed(ret = 0x%02x)\n", ret);
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_dos_close(handle);
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_dos_setvect(0x24, oldint24);
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return -1;
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}
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printf("Info: File Read success(num=%u)\n", num);
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}
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ret = _dos_close(handle);
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if (ret != 0) {
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printf("Error: File Close returned(ret = %02x)\n", ret);
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_dos_setvect(0x24, oldint24);
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return -1;
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}
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printf("Info: File Close success\n");
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_dos_setvect(0x24, oldint24);
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return 0;
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}
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""")
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self.mkfile("FOO.DAT", "xxxxxxxx", dname=testdir)
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if fstype.startswith("MFS"):
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name = "dXXXXs/d"
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else:
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name = self.mkimage("12", cwd=testdir)
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if fstype.endswith("RO"):
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name += ":ro"
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results = self.runDosemu("testit.bat", config="""\
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$_hdimage = "dXXXXs/c:hdtype1 %s +1"
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$_floppy_a = ""
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""" % name, timeout=10)
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self.assertIn("File Open success", results)
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if fstype.endswith("RO"):
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if optype == "WRITE":
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self.assertNotIn("File Write/Commit success", results)
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else:
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self.assertIn("File Read success", results)
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self.assertIn("File Close success", results)
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else:
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if optype == "WRITE":
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self.assertIn("File Write/Commit success", results)
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else:
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self.assertIn("File Read success", results)
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self.assertIn("File Close success", results)
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