mirror of
https://github.com/checkpoint-restore/criu.git
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ffa2688969
This commit add a test for checkpoint/restore MAP_HUGETLB memory mappings. A new zdtm helper get_mapping_dev() is added to get the device number of the memory mapping. Signed-off-by: Bui Quang Minh <minhquangbui99@gmail.com>
32 lines
629 B
C
32 lines
629 B
C
#include <sys/sysmacros.h>
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#include <string.h>
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#include <stdint.h>
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#include "zdtmtst.h"
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dev_t get_mapping_dev(void *addr)
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{
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char buf[1024];
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FILE *f;
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unsigned int major, minor;
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int ret;
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f = fopen("/proc/self/maps", "r");
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if (f == NULL) {
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pr_perror("Failed to open maps file");
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return (dev_t)-1;
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}
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while (fgets(buf, sizeof(buf), f)) {
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if ((unsigned long)addr == strtoul(buf, NULL, 16)) {
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ret = sscanf(buf, "%*x-%*x %*c%*c%*c%*c %*x %x:%x", &major, &minor);
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if (ret != 2) {
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pr_err("Can't parse /proc/self/maps\n");
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return (dev_t)-1;
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}
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return makedev(major, minor);
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}
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}
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return (dev_t)-1;
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}
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