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
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
|
#include <u.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <sys/wait.h>
#include <pwd.h>
#include <signal.h>
#include <fcntl.h>
#include <errno.h>
#include "sam.h"
Rune samname[] = { '~', '~', 's', 'a', 'm', '~', '~', 0 };
static Rune l1[] = { '{', '[', '(', '<', 0253, 0};
static Rune l2[] = { '\n', 0};
static Rune l3[] = { '\'', '"', '`', 0};
Rune *left[]= { l1, l2, l3, 0};
static Rune r1[] = {'}', ']', ')', '>', 0273, 0};
static Rune r2[] = {'\n', 0};
static Rune r3[] = {'\'', '"', '`', 0};
Rune *right[]= { r1, r2, r3, 0};
#ifndef SAMTERMNAME
#define SAMTERMNAME "samterm"
#endif
#ifndef TMPDIRNAME
#define TMPDIRNAME "/tmp"
#endif
#ifndef SHNAME
#define SHNAME "sh"
#endif
#ifndef SHPATHNAME
#define SHPATHNAME "/bin/sh"
#endif
#ifndef RXNAME
#define RXNAME "ssh"
#endif
#ifndef RXPATHNAME
#define RXPATHNAME "ssh"
#endif
char RSAM[] = "sam";
char SAMTERM[] = SAMTERMNAME;
char HOME[] = "HOME";
char TMPDIR[] = TMPDIRNAME;
char SH[] = SHNAME;
char SHPATH[] = SHPATHNAME;
char RX[] = RXNAME;
char RXPATH[] = RXPATHNAME;
void
dprint(char *z, ...)
{
char buf[BLOCKSIZE];
va_list arg;
va_start(arg, z);
vseprint(buf, &buf[BLOCKSIZE], z, arg);
va_end(arg);
termwrite(buf);
}
void
print_ss(char *s, String *a, String *b)
{
dprint("?warning: %s: `%.*S' and `%.*S'\n", s, a->n, a->s, b->n, b->s);
}
void
print_s(char *s, String *a)
{
dprint("?warning: %s `%.*S'\n", s, a->n, a->s);
}
char*
getuser(void)
{
static char user[64];
if(user[0] == 0){
struct passwd *pw = getpwuid(getuid());
strcpy(user, pw ? pw->pw_name : "nobody");
}
return user;
}
int
statfile(char *name, ulong *dev, uvlong *id, long *time, long *length, long *appendonly)
{
struct stat dirb;
if (stat(name, &dirb) == -1)
return -1;
if (dev)
*dev = dirb.st_dev;
if (id)
*id = dirb.st_ino;
if (time)
*time = dirb.st_mtime;
if (length)
*length = dirb.st_size;
if(appendonly)
*appendonly = 0;
return 1;
}
int
statfd(int fd, ulong *dev, uvlong *id, long *time, long *length, long *appendonly)
{
struct stat dirb;
if (fstat(fd, &dirb) == -1)
return -1;
if (dev)
*dev = dirb.st_dev;
if (id)
*id = dirb.st_ino;
if (time)
*time = dirb.st_mtime;
if (length)
*length = dirb.st_size;
if(appendonly)
*appendonly = 0;
return 1;
}
void
hup(int sig)
{
panicking = 1; // ???
rescue();
exit(1);
}
int
notify(void(*f)(void *, char *))
{
signal(SIGINT, SIG_IGN);
signal(SIGPIPE, SIG_IGN); // XXX - bpipeok?
signal(SIGHUP, hup);
return 1;
}
void
notifyf(void *a, char *b) /* never called; hup is instead */
{
}
static int
temp_file(char *buf, int bufsize)
{
char *tmp;
int n, fd;
tmp = getenv("TMPDIR");
if (!tmp)
tmp = TMPDIR;
n = snprint(buf, bufsize, "%s/sam.%d.XXXXXXX", tmp, getuid());
if (bufsize <= n)
return -1;
if ((fd = mkstemp(buf)) < 0) /* SES - linux sometimes uses mode 0666 */
return -1;
if (fcntl(fd, F_SETFD, fcntl(fd,F_GETFD,0) | FD_CLOEXEC) < 0)
return -1;
return fd;
}
int
tempdisk(void)
{
char buf[4096];
int fd = temp_file(buf, sizeof buf);
if (fd >= 0)
remove(buf);
return fd;
}
#undef waitfor
int
samwaitfor(int pid)
{
int r;
Waitmsg *w;
w = p9waitfor(pid);
if(w == nil)
return -1;
r = atoi(w->msg);
free(w);
return r;
}
void
samerr(char *buf)
{
sprint(buf, "%s/sam.%s.err", TMPDIR, getuser());
}
void*
emalloc(ulong n)
{
void *p;
p = malloc(n);
if(p == 0)
panic("malloc fails");
memset(p, 0, n);
return p;
}
void*
erealloc(void *p, ulong n)
{
p = realloc(p, n);
if(p == 0)
panic("realloc fails");
return p;
}
|