clang -cc1 -cc1 -triple amd64-unknown-openbsd7.4 -analyze -disable-free -clear-ast-before-backend -disable-llvm-verifier -discard-value-names -main-file-name swap.c -analyzer-checker=core -analyzer-checker=apiModeling -analyzer-checker=unix -analyzer-checker=deadcode -analyzer-checker=security.insecureAPI.UncheckedReturn -analyzer-checker=security.insecureAPI.getpw -analyzer-checker=security.insecureAPI.gets -analyzer-checker=security.insecureAPI.mktemp -analyzer-checker=security.insecureAPI.mkstemp -analyzer-checker=security.insecureAPI.vfork -analyzer-checker=nullability.NullPassedToNonnull -analyzer-checker=nullability.NullReturnedFromNonnull -analyzer-output plist -w -setup-static-analyzer -mrelocation-model pic -pic-level 1 -pic-is-pie -mframe-pointer=all -relaxed-aliasing -ffp-contract=on -fno-rounding-math -mconstructor-aliases -funwind-tables=2 -target-cpu x86-64 -target-feature +retpoline-indirect-calls -target-feature +retpoline-indirect-branches -tune-cpu generic -debugger-tuning=gdb -fcoverage-compilation-dir=/usr/src/usr.bin/systat/obj -resource-dir /usr/local/llvm16/lib/clang/16 -D NOKVM -I /usr/src/usr.bin/systat/../../usr.bin/vmstat -I /usr/src/usr.bin/systat/../../sbin/pfctl -internal-isystem /usr/local/llvm16/lib/clang/16/include -internal-externc-isystem /usr/include -O2 -fdebug-compilation-dir=/usr/src/usr.bin/systat/obj -ferror-limit 19 -fwrapv -D_RET_PROTECTOR -ret-protector -fcf-protection=branch -fno-jump-tables -fgnuc-version=4.2.1 -vectorize-loops -vectorize-slp -fno-builtin-malloc -fno-builtin-calloc -fno-builtin-realloc -fno-builtin-valloc -fno-builtin-free -fno-builtin-strdup -fno-builtin-strndup -analyzer-output=html -faddrsig -D__GCC_HAVE_DWARF2_CFI_ASM=1 -o /home/ben/Projects/scan/2024-01-11-140451-98009-1 -x c /usr/src/usr.bin/systat/swap.c
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 | #include <sys/types.h> |
35 | #include <sys/signal.h> |
36 | #include <sys/conf.h> |
37 | #include <sys/ioctl.h> |
38 | #include <sys/stat.h> |
39 | #include <sys/swap.h> |
40 | |
41 | #include <stdio.h> |
42 | #include <stdlib.h> |
43 | #include <string.h> |
44 | #include <errno.h> |
45 | #include <unistd.h> |
46 | |
47 | #include "systat.h" |
48 | |
49 | |
50 | static long blocksize; |
51 | static int hlen, nswap, rnswap; |
52 | static struct swapent *swap_devices; |
53 | |
54 | void print_sw(void); |
55 | int read_sw(void); |
56 | int select_sw(void); |
57 | static void showswap(int i); |
58 | static void showtotal(void); |
59 | |
60 | |
61 | field_def fields_sw[] = { |
62 | {"DISK", 6, 16, 1, FLD_ALIGN_LEFT, -1, 0, 0, 0}, |
63 | {"BLOCKS", 5, 10, 1, FLD_ALIGN_RIGHT, -1, 0, 0, 0}, |
64 | {"USED", 5, 10, 1, FLD_ALIGN_RIGHT, -1, 0, 0, 0}, |
65 | {"", 40, 80, 1, FLD_ALIGN_BAR, -1, 0, 0, 100}, |
66 | }; |
67 | |
68 | #define FLD_SW_NAME FIELD_ADDR(fields_sw,0) |
69 | #define FLD_SW_BLOCKS FIELD_ADDR(fields_sw,1) |
70 | #define FLD_SW_USED FIELD_ADDR(fields_sw,2) |
71 | #define FLD_SW_BAR FIELD_ADDR(fields_sw,3) |
72 | |
73 | |
74 | field_def *view_sw_0[] = { |
75 | FLD_SW_NAME, FLD_SW_BLOCKS, FLD_SW_USED, FLD_SW_BAR, NULL |
76 | }; |
77 | |
78 | |
79 | |
80 | struct view_manager swap_mgr = { |
81 | "Swap", select_sw, read_sw, NULL, print_header, |
82 | print_sw, keyboard_callback, NULL, NULL |
83 | }; |
84 | |
85 | field_view views_sw[] = { |
86 | {view_sw_0, "swap", '6', &swap_mgr}, |
87 | {NULL, NULL, 0, NULL} |
88 | }; |
89 | |
90 | |
91 | int |
92 | select_sw(void) |
93 | { |
94 | if (swap_devices == NULL || nswap == 0) |
95 | num_disp = 1; |
96 | else |
97 | num_disp = nswap; |
98 | if (nswap > 1) |
99 | num_disp++; |
100 | return (0); |
101 | } |
102 | |
103 | int |
104 | read_sw(void) |
105 | { |
106 | num_disp = 1; |
107 | |
108 | nswap = swapctl(SWAP_NSWAP, 0, 0); |
109 | |
110 | if (nswap < 0) |
111 | error("error: %s", strerror(errno)); |
112 | if (nswap == 0) |
113 | return 0; |
114 | |
115 | if (swap_devices) |
116 | (void)free(swap_devices); |
117 | |
118 | swap_devices = calloc(nswap, sizeof(*swap_devices)); |
119 | if (swap_devices == NULL) |
120 | return 0; |
121 | |
122 | rnswap = swapctl(SWAP_STATS, (void *)swap_devices, nswap); |
123 | if (rnswap == -1 || nswap != rnswap) |
124 | return 0; |
125 | |
126 | num_disp = nswap; |
127 | if (nswap > 1) |
128 | num_disp++; |
129 | |
130 | return 0; |
131 | } |
132 | |
133 | |
134 | void |
135 | print_sw(void) |
136 | { |
137 | int n, count = 0; |
138 | |
139 | if (swap_devices == NULL || nswap == 0) { |
| 1 | Assuming 'swap_devices' is not equal to NULL | |
|
| 2 | | Assuming 'nswap' is not equal to 0 | |
|
| |
140 | print_fld_str(FLD_SW_BAR, "No swap devices"); |
141 | return; |
142 | } |
143 | |
144 | |
145 | for (n = dispstart; n < num_disp; n++) { |
| 4 | | Assuming 'n' is < 'num_disp' | |
|
| 5 | | Loop condition is true. Entering loop body | |
|
146 | if (n >= nswap) |
| 6 | | Assuming 'n' is >= 'nswap' | |
|
| |
147 | showtotal(); |
| |
148 | else |
149 | showswap(n); |
150 | count++; |
151 | if (maxprint > 0 && count >= maxprint) |
152 | break; |
153 | } |
154 | |
155 | } |
156 | |
157 | int |
158 | initswap(void) |
159 | { |
160 | field_view *v; |
161 | |
162 | char *bs = getbsize(&hlen, &blocksize); |
163 | |
164 | FLD_SW_BLOCKS->title = strdup(bs); |
165 | |
166 | for (v = views_sw; v->name != NULL; v++) |
167 | add_view(v); |
168 | |
169 | return(1); |
170 | } |
171 | |
172 | |
173 | static void |
174 | showswap(int i) |
175 | { |
176 | int d, used, xsize; |
177 | struct swapent *sep; |
178 | char *p; |
179 | |
180 | d = blocksize / 512; |
181 | |
182 | sep = &swap_devices[i]; |
183 | |
184 | p = strrchr(sep->se_path, '/'); |
185 | p = p ? p+1 : sep->se_path; |
186 | |
187 | print_fld_str(FLD_SW_NAME, p); |
188 | |
189 | xsize = sep->se_nblks; |
190 | used = sep->se_inuse; |
191 | |
192 | print_fld_uint(FLD_SW_BLOCKS, xsize / d); |
193 | print_fld_uint(FLD_SW_USED, used / d); |
194 | print_fld_bar(FLD_SW_BAR, 100 * used / xsize); |
195 | |
196 | end_line(); |
197 | } |
198 | |
199 | static void |
200 | showtotal(void) |
201 | { |
202 | struct swapent *sep; |
203 | int d, i, avail, used, xsize, mfree; |
204 | |
205 | d = blocksize / 512; |
206 | mfree = avail = 0; |
| 9 | | The value 0 is assigned to 'avail' | |
|
207 | |
208 | for (sep = swap_devices, i = 0; i < nswap; i++, sep++) { |
| 10 | | Assuming 'i' is >= 'nswap' | |
|
| 11 | | Loop condition is false. Execution continues on line 214 | |
|
209 | xsize = sep->se_nblks; |
210 | used = sep->se_inuse; |
211 | avail += xsize; |
212 | mfree += xsize - used; |
213 | } |
214 | used = avail - mfree; |
215 | |
216 | print_fld_str(FLD_SW_NAME, "Total"); |
217 | print_fld_uint(FLD_SW_BLOCKS, avail / d); |
218 | print_fld_uint(FLD_SW_USED, used / d); |
219 | print_fld_bar(FLD_SW_BAR, 100 * used / avail); |
| |
220 | |
221 | end_line(); |
222 | } |