void process_mem_range(char *mr, Section *ms)
{
const char deli[2] = "-";
char *start = strtok(mr, deli);
char *end = strtok(NULL, deli);
mtcp_readhex(start, &ms->start);
mtcp_readhex(end, &ms->end);
ms->len = ms->end - ms->start;
}
int mtcp_selfmap_readline(int selfmapfd, VA *startaddr, VA *endaddr,
off_t *file_offset) {
int rc = 0;
char c;
if (file_offset != NULL)
*file_offset = (off_t)-1;
c = mtcp_readhex (selfmapfd, startaddr);
if (c == '\0') return 0; /* c == '\0' implies that reached end-of-file */
if (c != '-') goto skipeol;
c = mtcp_readhex (selfmapfd, endaddr);
if (c != ' ') goto skipeol;
skipeol:
while ((c != '\0') && (c != '\n')) {
if ( (file_offset != NULL) && (*file_offset == (off_t)-1) &&
((c == '/') || (c == '[')) )
*file_offset = mtcp_sys_lseek(selfmapfd, 0, SEEK_CUR) - 1;
c = mtcp_readchar (selfmapfd);
}
return 1; /* 1 means successfully read a line */
}
int mtcp_readmapsline (int mapsfd, Area *area, DeviceInfo *dev_info)
{
char c, rflag, sflag, wflag, xflag;
int i;
unsigned int long devmajor, devminor, inodenum;
VA startaddr, endaddr;
c = mtcp_readhex (mapsfd, &startaddr);
if (c != '-') {
if ((c == 0) && (startaddr == 0)) return (0);
goto skipeol;
}
c = mtcp_readhex (mapsfd, &endaddr);
if (c != ' ') goto skipeol;
if (endaddr < startaddr) goto skipeol;
rflag = c = mtcp_readchar (mapsfd);
if ((c != 'r') && (c != '-')) goto skipeol;
wflag = c = mtcp_readchar (mapsfd);
if ((c != 'w') && (c != '-')) goto skipeol;
xflag = c = mtcp_readchar (mapsfd);
if ((c != 'x') && (c != '-')) goto skipeol;
sflag = c = mtcp_readchar (mapsfd);
if ((c != 's') && (c != 'p')) goto skipeol;
c = mtcp_readchar (mapsfd);
if (c != ' ') goto skipeol;
c = mtcp_readhex (mapsfd, (VA *)&devmajor);
if (c != ' ') goto skipeol;
area -> offset = (off_t)devmajor;
c = mtcp_readhex (mapsfd, (VA *)&devmajor);
if (c != ':') goto skipeol;
c = mtcp_readhex (mapsfd, (VA *)&devminor);
if (c != ' ') goto skipeol;
c = mtcp_readdec (mapsfd, (VA *)&inodenum);
area -> name[0] = '\0';
while (c == ' ') c = mtcp_readchar (mapsfd);
if (c == '/' || c == '[') { /* absolute pathname, or [stack], [vdso], etc. */
i = 0;
do {
area -> name[i++] = c;
if (i == sizeof area -> name) goto skipeol;
c = mtcp_readchar (mapsfd);
} while (c != '\n');
area -> name[i] = '\0';
}
if (c != '\n') goto skipeol;
area -> addr = startaddr;
area -> size = endaddr - startaddr;
area -> prot = 0;
if (rflag == 'r') area -> prot |= PROT_READ;
if (wflag == 'w') area -> prot |= PROT_WRITE;
if (xflag == 'x') area -> prot |= PROT_EXEC;
area -> flags = MAP_FIXED;
if (sflag == 's') area -> flags |= MAP_SHARED;
if (sflag == 'p') area -> flags |= MAP_PRIVATE;
if (area -> name[0] == '\0') area -> flags |= MAP_ANONYMOUS;
if (dev_info != NULL) {
dev_info->devmajor = devmajor;
dev_info->devminor = devminor;
dev_info->inodenum = inodenum;
}
return (1);
skipeol:
DPRINTF("ERROR: mtcp readmapsline*: bad maps line <%c", c);
while ((c != '\n') && (c != '\0')) {
c = mtcp_readchar (mapsfd);
mtcp_printf ("%c", c);
}
mtcp_printf (">\n");
mtcp_abort ();
return (0); /* NOTREACHED : stop compiler warning */
}
