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Handle snprintf() returning -1.

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MFC after:	2 weeks
This commit is contained in:
Brian Somers 2001-08-20 14:46:40 +00:00
parent 5f32890558
commit cbe1d3b630
4 changed files with 32 additions and 18 deletions
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8
usr.bin/apply/apply.c
View File

@ -143,13 +143,13 @@ main(int argc, char *argv[]) {
p = cmd;
offset = snprintf(cmd, cmdsize, EXEC "%s", argv[0]);
if ((size_t)offset >= cmdsize)
if (offset < 0 || (size_t)offset >= cmdsize)
err(1, "snprintf() failed");
p += offset;
cmdsize -= offset;
for (i = 1; i <= nargs; i++) {
offset = snprintf(p, cmdsize, " %c%d", magic, i);
if ((size_t)offset >= cmdsize)
if (offset < 0 || (size_t)offset >= cmdsize)
err(1, "snprintf() failed");
p += offset;
cmdsize -= offset;
@ -163,7 +163,7 @@ main(int argc, char *argv[]) {
nargs = 1;
} else {
offset = snprintf(cmd, cmdsize, EXEC "%s", argv[0]);
if ((size_t)offset >= cmdsize)
if (offset < 0 || (size_t)offset >= cmdsize)
err(1, "snprintf() failed");
nargs = n;
}
@ -196,7 +196,7 @@ main(int argc, char *argv[]) {
if (p[0] == magic && isdigit(p[1]) && p[1] != '0') {
offset = snprintf(q, l, "%s",
argv[(++p)[0] - '0']);
if ((size_t)offset >= l)
if (offset < 0 || (size_t)offset >= l)
err(1, "snprintf() failed");
q += offset;
l -= offset;

2
usr.bin/ftp/fetch.c
View File

@ -282,7 +282,7 @@ url_get(origline, proxyenv)
printf("Requesting %s (via %s)\n", origline, proxyenv);
len = snprintf(buf, sizeof(buf), "GET %s%s HTTP/1.0\r\n\r\n",
proxy ? "" : "/", path);
if (write(s, buf, len) < len) {
if (len < 0 || write(s, buf, len) < len) {
warn("Writing HTTP request");
goto cleanup_url_get;
}

38
usr.bin/ftp/util.c
View File

@ -604,7 +604,7 @@ progressmeter(flag)
struct timeval now, td, wait;
off_t cursize, abbrevsize;
double elapsed;
int ratio, barlength, i, len;
int ratio, barlength, i, len, n;
off_t remaining;
char buf[256];
@ -623,16 +623,20 @@ progressmeter(flag)
ratio = cursize * 100 / filesize;
ratio = MAX(ratio, 0);
ratio = MIN(ratio, 100);
len += snprintf(buf + len, sizeof(buf) - len, "\r%3d%% ", ratio);
n = snprintf(buf + len, sizeof(buf) - len, "\r%3d%% ", ratio);
if (n > 0)
len += n;
barlength = ttywidth - 30;
if (barlength > 0) {
i = barlength * ratio / 100;
len += snprintf(buf + len, sizeof(buf) - len,
n = snprintf(buf + len, sizeof(buf) - len,
"|%.*s%*s|", i,
"*****************************************************************************"
"*****************************************************************************",
barlength - i, "");
if (n > 0)
len += n;
}
i = 0;
@ -641,9 +645,11 @@ progressmeter(flag)
i++;
abbrevsize >>= 10;
}
len += snprintf(buf + len, sizeof(buf) - len,
n = snprintf(buf + len, sizeof(buf) - len,
" %5qd %c%c ", (long long)abbrevsize, prefixes[i],
prefixes[i] == ' ' ? ' ' : 'B');
if (n > 0)
len += n;
timersub(&now, &lastupdate, &wait);
if (cursize > lastsize) {
@ -660,30 +666,34 @@ progressmeter(flag)
elapsed = td.tv_sec + (td.tv_usec / 1000000.0);
if (bytes <= 0 || elapsed <= 0.0 || cursize > filesize) {
len += snprintf(buf + len, sizeof(buf) - len,
n = snprintf(buf + len, sizeof(buf) - len,
" --:-- ETA");
} else if (wait.tv_sec >= STALLTIME) {
len += snprintf(buf + len, sizeof(buf) - len,
n = snprintf(buf + len, sizeof(buf) - len,
" - stalled -");
} else {
remaining =
((filesize - restart_point) / (bytes / elapsed) - elapsed);
if (remaining >= 100 * SECSPERHOUR)
len += snprintf(buf + len, sizeof(buf) - len,
n = snprintf(buf + len, sizeof(buf) - len,
" --:-- ETA");
else {
i = remaining / SECSPERHOUR;
if (i)
len += snprintf(buf + len, sizeof(buf) - len,
n = snprintf(buf + len, sizeof(buf) - len,
"%2d:", i);
else
len += snprintf(buf + len, sizeof(buf) - len,
n = snprintf(buf + len, sizeof(buf) - len,
" ");
if (n > 0)
len += n;
i = remaining % SECSPERHOUR;
len += snprintf(buf + len, sizeof(buf) - len,
"%02d:%02d ETA", i / 60, i % 60);
}
}
if (n > 0)
len += n;
(void)write(STDOUT_FILENO, buf, len);
if (flag == -1) {
@ -711,7 +721,7 @@ ptransfer(siginfo)
struct timeval now, td;
double elapsed;
off_t bs;
int meg, remaining, hh, len;
int meg, n, remaining, hh, len;
char buf[100];
if (!verbose && !siginfo)
@ -725,10 +735,12 @@ ptransfer(siginfo)
if (bs > (1024 * 1024))
meg = 1;
len = 0;
len += snprintf(buf + len, sizeof(buf) - len,
n = snprintf(buf + len, sizeof(buf) - len,
"%qd byte%s %s in %.2f seconds (%.2f %sB/s)\n",
(long long)bytes, bytes == 1 ? "" : "s", direction, elapsed,
bs / (1024.0 * (meg ? 1024.0 : 1.0)), meg ? "M" : "K");
if (n > 0)
len += n;
if (siginfo && bytes > 0 && elapsed > 0.0 && filesize >= 0
&& bytes + restart_point <= filesize) {
remaining = (int)((filesize - restart_point) /
@ -736,9 +748,11 @@ ptransfer(siginfo)
hh = remaining / SECSPERHOUR;
remaining %= SECSPERHOUR;
len--; /* decrement len to overwrite \n */
len += snprintf(buf + len, sizeof(buf) - len,
n = snprintf(buf + len, sizeof(buf) - len,
" ETA: %02d:%02d:%02d\n", hh, remaining / 60,
remaining % 60);
if (n > 0)
len += n;
}
(void)write(siginfo ? STDERR_FILENO : STDOUT_FILENO, buf, len);
}

2
usr.bin/mail/fio.c
View File

@ -419,7 +419,7 @@ getfold(name, namelen)
else
copylen = snprintf(name, namelen, "%s/%s",
homedir ? homedir : ".", folder);
return (copylen >= namelen ? (-1) : (0));
return (copylen < 0 || copylen >= namelen ? (-1) : (0));
}
/*