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exec: make -mem-path filenames deterministic

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Adds ramblocks' names to their backing files when using -mem-path.  Eases
introspection and debugging.

Signed-off-by: Peter Feiner <peter@gridcentric.ca>
Message-id: 1362423265-15855-1-git-send-email-peter@gridcentric.ca
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
This commit is contained in:
Peter Feiner 2013-03-04 13:54:25 -05:00 committed by Anthony Liguori
parent 4524051c32
commit 8ca761f661
1 changed files with 12 additions and 1 deletions
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13
exec.c
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@ -844,6 +844,8 @@ static void *file_ram_alloc(RAMBlock *block,
const char *path)
{
char *filename;
char *sanitized_name;
char *c;
void *area;
int fd;
#ifdef MAP_POPULATE
@ -865,7 +867,16 @@ static void *file_ram_alloc(RAMBlock *block,
return NULL;
}
filename = g_strdup_printf("%s/qemu_back_mem.XXXXXX", path);
/* Make name safe to use with mkstemp by replacing '/' with '_'. */
sanitized_name = g_strdup(block->mr->name);
for (c = sanitized_name; *c != '\0'; c++) {
if (*c == '/')
*c = '_';
}
filename = g_strdup_printf("%s/qemu_back_mem.%s.XXXXXX", path,
sanitized_name);
g_free(sanitized_name);
fd = mkstemp(filename);
if (fd < 0) {