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Enable os dependend stdio size estimation

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This commit is contained in:
Thomas Schmitt 2007-09-09 13:31:29 +00:00
parent ffed552183
commit 75dd141055
6 changed files with 213 additions and 1 deletions
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2
cdrskin/cdrskin_timestamp.h
View File

@ -1 +1 @@
#define Cdrskin_timestamP "2007.09.09.093637"
#define Cdrskin_timestamP "2007.09.09.133136"

2
libburn/init.c
View File

@ -8,6 +8,8 @@
#include <stdio.h>
#include <signal.h>
#include <string.h>
#include <stdlib.h>
#include "init.h"
#include "sg.h"

72
libburn/sg-freebsd-port.c
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@ -48,6 +48,8 @@ sg_issue_command() sends a SCSI command to the drive, receives reply,
sg_obtain_scsi_adr() tries to obtain SCSI address parameters.
burn_os_stdio_capacity() estimates the emulated media space of stdio-drives.
Porting hints are marked by the text "PORTING:".
Send feedback to libburn-hackers@pykix.org .
@ -74,6 +76,10 @@ Send feedback to libburn-hackers@pykix.org .
#include <err.h> /* XXX */
/* ts A70909 : >>> untestet yet wether this compiles */
#include <sys/statvfs.h>
/** PORTING : ------ libburn portable headers and definitions ----- */
#include "transport.h"
@ -557,3 +563,69 @@ int sg_is_enumerable_adr(char* adr)
return (0);
}
/* ts A70909 */
/** Estimate the potential payload capacity of a file address.
@param path The address of the file to be examined. If it does not
exist yet, then the directory will be inquired.
@param bytes This value gets modified if an estimation is possible
@return -2 = cannot perform necessary operations on file object
-1 = neither path nor dirname of path exist
0 = could not estimate size capacity of file object
1 = estimation has been made, bytes was set
*/
int burn_os_stdio_capacity(char *path, off_t *bytes)
{
struct stat stbuf;
struct statvfs vfsbuf;
char testpath[4096], *cpt;
long blocks;
int open_mode = O_RDWR, fd, ret;
off_t add_size = 0;
testpath[0] = 0;
blocks = *bytes / 512;
if (stat(path, &stbuf) == -1) {
strcpy(testpath, path);
cpt = strrchr(testpath, '/');
if(cpt == NULL)
strcpy(testpath, ".");
else if(cpt == testpath)
testpath[1] = 0;
else
*cpt = 0;
if (stat(testpath, &stbuf) == -1)
return -1;
#ifdef Libburn_if_this_was_linuX
} else if(S_ISBLK(stbuf.st_mode)) {
if(burn_sg_open_o_excl)
open_mode |= O_EXCL;
fd = open(path, open_mode);
if (fd == -1)
return -2;
ret = ioctl(fd, BLKGETSIZE, &blocks);
close(fd);
if (ret == -1)
return -2;
*bytes = ((off_t) blocks) * (off_t) 512;
#endif /* Libburn_if_this_was_linuX */
} else if(S_ISREG(stbuf.st_mode)) {
add_size = stbuf.st_blocks * (off_t) 512;
strcpy(testpath, path);
} else
return 0;
if (testpath[0]) {
if (statvfs(testpath, &vfsbuf) == -1)
return -2;
*bytes = add_size + ((off_t) vfsbuf.f_bsize) *
(off_t) vfsbuf.f_bavail;
}
return 1;
}

70
libburn/sg-freebsd.c
View File

@ -18,6 +18,10 @@
#include <err.h> /* XXX */
/* ts A70909 : >>> untestet yet wether this compiles */
#include <sys/statvfs.h>
#include "transport.h"
#include "drive.h"
#include "sg.h"
@ -598,3 +602,69 @@ int sg_issue_command(struct burn_drive *d, struct command *c)
return 1;
}
/* ts A70909 */
/** Estimate the potential payload capacity of a file address.
@param path The address of the file to be examined. If it does not
exist yet, then the directory will be inquired.
@param bytes This value gets modified if an estimation is possible
@return -2 = cannot perform necessary operations on file object
-1 = neither path nor dirname of path exist
0 = could not estimate size capacity of file object
1 = estimation has been made, bytes was set
*/
int burn_os_stdio_capacity(char *path, off_t *bytes)
{
struct stat stbuf;
struct statvfs vfsbuf;
char testpath[4096], *cpt;
long blocks;
int open_mode = O_RDWR, fd, ret;
off_t add_size = 0;
testpath[0] = 0;
blocks = *bytes / 512;
if (stat(path, &stbuf) == -1) {
strcpy(testpath, path);
cpt = strrchr(testpath, '/');
if(cpt == NULL)
strcpy(testpath, ".");
else if(cpt == testpath)
testpath[1] = 0;
else
*cpt = 0;
if (stat(testpath, &stbuf) == -1)
return -1;
#ifdef Libburn_if_this_was_linuX
} else if(S_ISBLK(stbuf.st_mode)) {
if(burn_sg_open_o_excl)
open_mode |= O_EXCL;
fd = open(path, open_mode);
if (fd == -1)
return -2;
ret = ioctl(fd, BLKGETSIZE, &blocks);
close(fd);
if (ret == -1)
return -2;
*bytes = ((off_t) blocks) * (off_t) 512;
#endif /* Libburn_if_this_was_linuX */
} else if(S_ISREG(stbuf.st_mode)) {
add_size = stbuf.st_blocks * (off_t) 512;
strcpy(testpath, path);
} else
return 0;
if (testpath[0]) {
if (statvfs(testpath, &vfsbuf) == -1)
return -2;
*bytes = add_size + ((off_t) vfsbuf.f_bsize) *
(off_t) vfsbuf.f_bavail;
}
return 1;
}

66
libburn/sg-linux.c
View File

@ -48,6 +48,8 @@ sg_issue_command() sends a SCSI command to the drive, receives reply,
sg_obtain_scsi_adr() tries to obtain SCSI address parameters.
burn_os_stdio_capacity() estimates the emulated media space of stdio-drives.
Porting hints are marked by the text "PORTING:".
Send feedback to libburn-hackers@pykix.org .
@ -73,6 +75,11 @@ Hint: You should also look into sg-freebsd-port.c, which is a younger and
#include <stdlib.h>
#include <sys/utsname.h>
#include <scsi/scsi.h>
#include <sys/statvfs.h>
/* for ioctl(BLKGETSIZE) */
#include <linux/fs.h>
#include <scsi/sg.h>
/* Values within sg_io_hdr_t indicating success after ioctl(SG_IO) : */
@ -1352,3 +1359,62 @@ int sg_is_enumerable_adr(char *adr)
}
/* ts A70909 */
/** Estimate the potential payload capacity of a file address.
@param path The address of the file to be examined. If it does not
exist yet, then the directory will be inquired.
@param bytes The pointed value gets modified, but only if an estimation is
possible.
@return -2 = cannot perform necessary operations on file object
-1 = neither path nor dirname of path exist
0 = could not estimate size capacity of file object
1 = estimation has been made, bytes was set
*/
int burn_os_stdio_capacity(char *path, off_t *bytes)
{
struct stat stbuf;
struct statvfs vfsbuf;
char testpath[4096], *cpt;
long blocks;
int open_mode = O_RDWR, fd, ret;
off_t add_size = 0;
testpath[0] = 0;
blocks = *bytes / 512;
if (stat(path, &stbuf) == -1) {
strcpy(testpath, path);
cpt = strrchr(testpath, '/');
if(cpt == NULL)
strcpy(testpath, ".");
else if(cpt == testpath)
testpath[1] = 0;
else
*cpt = 0;
if (stat(testpath, &stbuf) == -1)
return -1;
} else if(S_ISBLK(stbuf.st_mode)) {
if(burn_sg_open_o_excl)
open_mode |= O_EXCL;
fd = open(path, open_mode);
if (fd == -1)
return -2;
ret = ioctl(fd, BLKGETSIZE, &blocks);
close(fd);
if (ret == -1)
return -2;
*bytes = ((off_t) blocks) * (off_t) 512;
} else if(S_ISREG(stbuf.st_mode)) {
add_size = stbuf.st_blocks * (off_t) 512;
strcpy(testpath, path);
} else
return 0;
if (testpath[0]) {
if (statvfs(testpath, &vfsbuf) == -1)
return -2;
*bytes = add_size + ((off_t) vfsbuf.f_bsize) *
(off_t) vfsbuf.f_bavail;
}
return 1;
}

2
libburn/sg.h
View File

@ -31,4 +31,6 @@ int scsi_enumerate_drives(void);
int sg_drive_is_open(struct burn_drive * d);
int burn_os_stdio_capacity(char *path, off_t *bytes);
#endif /* __SG */