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Commit | Line | Data |
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1aed2671 | 1 | #include "../perf.h" |
4cf40131 | 2 | #include "util.h" |
69e3f52d | 3 | #include <sys/mman.h> |
4cf40131 | 4 | |
1aed2671 JR |
5 | /* |
6 | * XXX We need to find a better place for these things... | |
7 | */ | |
8 | bool perf_host = true; | |
c4a7dca9 | 9 | bool perf_guest = false; |
1aed2671 JR |
10 | |
11 | void event_attr_init(struct perf_event_attr *attr) | |
12 | { | |
13 | if (!perf_host) | |
14 | attr->exclude_host = 1; | |
15 | if (!perf_guest) | |
16 | attr->exclude_guest = 1; | |
7e1ccd38 SE |
17 | /* to capture ABI version */ |
18 | attr->size = sizeof(*attr); | |
1aed2671 JR |
19 | } |
20 | ||
4cf40131 ACM |
21 | int mkdir_p(char *path, mode_t mode) |
22 | { | |
23 | struct stat st; | |
24 | int err; | |
25 | char *d = path; | |
26 | ||
27 | if (*d != '/') | |
28 | return -1; | |
29 | ||
30 | if (stat(path, &st) == 0) | |
31 | return 0; | |
32 | ||
33 | while (*++d == '/'); | |
34 | ||
35 | while ((d = strchr(d, '/'))) { | |
36 | *d = '\0'; | |
37 | err = stat(path, &st) && mkdir(path, mode); | |
38 | *d++ = '/'; | |
39 | if (err) | |
40 | return -1; | |
41 | while (*d == '/') | |
42 | ++d; | |
43 | } | |
44 | return (stat(path, &st) && mkdir(path, mode)) ? -1 : 0; | |
45 | } | |
46 | ||
9e201442 ACM |
47 | static int slow_copyfile(const char *from, const char *to) |
48 | { | |
49 | int err = 0; | |
50 | char *line = NULL; | |
51 | size_t n; | |
52 | FILE *from_fp = fopen(from, "r"), *to_fp; | |
53 | ||
54 | if (from_fp == NULL) | |
55 | goto out; | |
56 | ||
57 | to_fp = fopen(to, "w"); | |
58 | if (to_fp == NULL) | |
59 | goto out_fclose_from; | |
60 | ||
61 | while (getline(&line, &n, from_fp) > 0) | |
62 | if (fputs(line, to_fp) == EOF) | |
63 | goto out_fclose_to; | |
64 | err = 0; | |
65 | out_fclose_to: | |
66 | fclose(to_fp); | |
67 | free(line); | |
68 | out_fclose_from: | |
69 | fclose(from_fp); | |
70 | out: | |
71 | return err; | |
72 | } | |
73 | ||
4cf40131 ACM |
74 | int copyfile(const char *from, const char *to) |
75 | { | |
76 | int fromfd, tofd; | |
77 | struct stat st; | |
78 | void *addr; | |
79 | int err = -1; | |
80 | ||
81 | if (stat(from, &st)) | |
82 | goto out; | |
83 | ||
9e201442 ACM |
84 | if (st.st_size == 0) /* /proc? do it slowly... */ |
85 | return slow_copyfile(from, to); | |
86 | ||
4cf40131 ACM |
87 | fromfd = open(from, O_RDONLY); |
88 | if (fromfd < 0) | |
89 | goto out; | |
90 | ||
91 | tofd = creat(to, 0755); | |
92 | if (tofd < 0) | |
93 | goto out_close_from; | |
94 | ||
95 | addr = mmap(NULL, st.st_size, PROT_READ, MAP_PRIVATE, fromfd, 0); | |
96 | if (addr == MAP_FAILED) | |
97 | goto out_close_to; | |
98 | ||
99 | if (write(tofd, addr, st.st_size) == st.st_size) | |
100 | err = 0; | |
101 | ||
102 | munmap(addr, st.st_size); | |
103 | out_close_to: | |
104 | close(tofd); | |
105 | if (err) | |
106 | unlink(to); | |
107 | out_close_from: | |
108 | close(fromfd); | |
109 | out: | |
110 | return err; | |
111 | } | |
c82ee828 ACM |
112 | |
113 | unsigned long convert_unit(unsigned long value, char *unit) | |
114 | { | |
115 | *unit = ' '; | |
116 | ||
117 | if (value > 1000) { | |
118 | value /= 1000; | |
119 | *unit = 'K'; | |
120 | } | |
121 | ||
122 | if (value > 1000) { | |
123 | value /= 1000; | |
124 | *unit = 'M'; | |
125 | } | |
126 | ||
127 | if (value > 1000) { | |
128 | value /= 1000; | |
129 | *unit = 'G'; | |
130 | } | |
131 | ||
132 | return value; | |
133 | } | |
1e7972cc ACM |
134 | |
135 | int readn(int fd, void *buf, size_t n) | |
136 | { | |
137 | void *buf_start = buf; | |
138 | ||
139 | while (n) { | |
140 | int ret = read(fd, buf, n); | |
141 | ||
142 | if (ret <= 0) | |
143 | return ret; | |
144 | ||
145 | n -= ret; | |
146 | buf += ret; | |
147 | } | |
148 | ||
149 | return buf - buf_start; | |
150 | } |