1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
|
#include "swap.h"
#include "common/io.h"
#include "common/mallocHelper.h"
#include <inttypes.h>
static const char* detectByProcMeminfo(FFlist* result) {
// For Android
// Ref: #620
char buf[PROC_FILE_BUFFSIZ];
ssize_t nRead = ffReadFileData("/proc/meminfo", ARRAY_SIZE(buf) - 1, buf);
if (nRead < 0) {
return "ffReadFileData(\"/proc/meminfo\", ARRAY_SIZE(buf)-1, buf)";
}
buf[nRead] = '\0';
uint64_t swapTotal = 0, swapFree = 0;
char* token = NULL;
if ((token = strstr(buf, "SwapTotal:")) != NULL) {
swapTotal = strtoul(token + strlen("SwapTotal:"), NULL, 10);
}
if ((token = strstr(buf, "SwapFree:")) != NULL) {
swapFree = strtoul(token + strlen("SwapFree:"), NULL, 10);
}
FFSwapResult* swap = FF_LIST_ADD(FFSwapResult, *result);
ffStrbufInitStatic(&swap->name, "Total");
swap->bytesTotal = swapTotal * 1024lu;
swap->bytesUsed = (swapTotal - swapFree) * 1024lu;
return NULL;
}
static const char* detectByProcSwaps(FFlist* result) {
// Ref: #620
char buf[PROC_FILE_BUFFSIZ];
ssize_t nRead = ffReadFileData("/proc/swaps", ARRAY_SIZE(buf) - 1, buf);
if (nRead <= 0) {
return "ffReadFileData(\"/proc/swaps\", ARRAY_SIZE(buf)-1, buf) failed";
}
buf[nRead] = '\0';
// Skip header
char* line = memchr(buf, '\n', (size_t) nRead);
while (line && *++line) {
uint64_t total, used;
char name[256];
if (sscanf(line, "%255s %*[^\t]%" SCNu64 "%" SCNu64, name, &total, &used) != 3) {
return "Invalid /proc/swaps format found";
}
uint32_t nameLen = (uint32_t) strnlen(name, sizeof(name));
FFSwapResult* swap = FF_LIST_ADD(FFSwapResult, *result);
ffStrbufInitA(&swap->name, nameLen);
for (size_t i = 0; i < nameLen; ++i) {
if (name[i] == '\\') {
char octal[4] = { name[i + 1], name[i + 2], name[i + 3], '\0' };
ffStrbufAppendC(&swap->name, (char) strtol(octal, NULL, 8));
i += 3;
} else {
ffStrbufAppendC(&swap->name, name[i]);
}
}
swap->bytesTotal = total * 1024u;
swap->bytesUsed = used * 1024u;
line = memchr(line, '\n', (size_t) (nRead - (line - buf)));
}
return NULL;
}
const char* ffDetectSwap(FFlist* result) {
if (detectByProcSwaps(result) == NULL) {
return NULL;
}
return detectByProcMeminfo(result);
}
|
