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Remove unused line_read()

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The old, ugly implementation of line_read() is no longer used.  Remove it.

Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
This commit is contained in:
David Gibson 2022-06-24 12:17:32 +10:00 committed by Stefano Brivio
parent cf83df4574
commit cbac0245c8
1 changed files with 0 additions and 54 deletions
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54
util.c
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@ -409,60 +409,6 @@ int bitmap_isset(const uint8_t *map, int bit)
return !!(*word & BITMAP_BIT(bit)); return !!(*word & BITMAP_BIT(bit));
} }
/**
* line_read() - Similar to fgets(), no heap usage, a file instead of a stream
* @buf: Read buffer: on non-empty string, use that instead of reading
* @len: Maximum line length
* @fd: File descriptor for reading
*
* Return: @buf if a line is found, NULL on EOF or error
*/
char *line_read(char *buf, size_t len, int fd)
{
int n, do_read = !*buf;
char *p;
if (!do_read) {
char *nl;
buf[len - 1] = 0;
if (!strlen(buf))
return NULL;
p = buf + strlen(buf) + 1;
while (*p == '\n' && strlen(p) && (size_t)(p - buf) < len)
p++;
if (!(nl = strchr(p, '\n')))
return NULL;
*nl = 0;
return memmove(buf, p, len - (p - buf));
}
n = read(fd, buf, --len);
if (n <= 0)
return NULL;
buf[len] = 0;
p = buf;
while (*p == '\n' && strlen(p) && (size_t)(p - buf) < len)
p++;
if (!(p = strchr(p, '\n')))
return buf;
*p = 0;
if (p == buf)
return buf;
lseek(fd, (p - buf) - n + 1, SEEK_CUR);
return buf;
}
/** /**
* procfs_scan_listen() - Set bits for listening TCP or UDP sockets from procfs * procfs_scan_listen() - Set bits for listening TCP or UDP sockets from procfs
* @proto: IPPROTO_TCP or IPPROTO_UDP * @proto: IPPROTO_TCP or IPPROTO_UDP