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Rename some imsg bits to make namespace collisions less likely buf to

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ibuf, buf_read to ibuf_read, READ_BUF_SIZE to IBUF_READ_SIZE.

ok henning gilles claudio jacekm deraadt
This commit is contained in:
Nicholas Marriott 2010-05-26 13:56:07 +00:00
parent 1e8faaa217
commit c47d66f49b
3 changed files with 62 additions and 62 deletions
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64
imsg-buffer.c
View File

@ -28,16 +28,16 @@
#include "imsg.h" #include "imsg.h"
int buf_realloc(struct buf *, size_t); int ibuf_realloc(struct ibuf *, size_t);
void buf_enqueue(struct msgbuf *, struct buf *); void ibuf_enqueue(struct msgbuf *, struct ibuf *);
void buf_dequeue(struct msgbuf *, struct buf *); void ibuf_dequeue(struct msgbuf *, struct ibuf *);
struct buf * struct ibuf *
buf_open(size_t len) ibuf_open(size_t len)
{ {
struct buf *buf; struct ibuf *buf;
if ((buf = calloc(1, sizeof(struct buf))) == NULL) if ((buf = calloc(1, sizeof(struct ibuf))) == NULL)
return (NULL); return (NULL);
if ((buf->buf = malloc(len)) == NULL) { if ((buf->buf = malloc(len)) == NULL) {
free(buf); free(buf);
@ -49,15 +49,15 @@ buf_open(size_t len)
return (buf); return (buf);
} }
struct buf * struct ibuf *
buf_dynamic(size_t len, size_t max) ibuf_dynamic(size_t len, size_t max)
{ {
struct buf *buf; struct ibuf *buf;
if (max < len) if (max < len)
return (NULL); return (NULL);
if ((buf = buf_open(len)) == NULL) if ((buf = ibuf_open(len)) == NULL)
return (NULL); return (NULL);
if (max > 0) if (max > 0)
@ -67,7 +67,7 @@ buf_dynamic(size_t len, size_t max)
} }
int int
buf_realloc(struct buf *buf, size_t len) ibuf_realloc(struct ibuf *buf, size_t len)
{ {
u_char *b; u_char *b;
@ -87,10 +87,10 @@ buf_realloc(struct buf *buf, size_t len)
} }
int int
buf_add(struct buf *buf, const void *data, size_t len) ibuf_add(struct ibuf *buf, const void *data, size_t len)
{ {
if (buf->wpos + len > buf->size) if (buf->wpos + len > buf->size)
if (buf_realloc(buf, len) == -1) if (ibuf_realloc(buf, len) == -1)
return (-1); return (-1);
memcpy(buf->buf + buf->wpos, data, len); memcpy(buf->buf + buf->wpos, data, len);
@ -99,12 +99,12 @@ buf_add(struct buf *buf, const void *data, size_t len)
} }
void * void *
buf_reserve(struct buf *buf, size_t len) ibuf_reserve(struct ibuf *buf, size_t len)
{ {
void *b; void *b;
if (buf->wpos + len > buf->size) if (buf->wpos + len > buf->size)
if (buf_realloc(buf, len) == -1) if (ibuf_realloc(buf, len) == -1)
return (NULL); return (NULL);
b = buf->buf + buf->wpos; b = buf->buf + buf->wpos;
@ -113,7 +113,7 @@ buf_reserve(struct buf *buf, size_t len)
} }
void * void *
buf_seek(struct buf *buf, size_t pos, size_t len) ibuf_seek(struct ibuf *buf, size_t pos, size_t len)
{ {
/* only allowed to seek in already written parts */ /* only allowed to seek in already written parts */
if (pos + len > buf->wpos) if (pos + len > buf->wpos)
@ -123,28 +123,28 @@ buf_seek(struct buf *buf, size_t pos, size_t len)
} }
size_t size_t
buf_size(struct buf *buf) ibuf_size(struct ibuf *buf)
{ {
return (buf->wpos); return (buf->wpos);
} }
size_t size_t
buf_left(struct buf *buf) ibuf_left(struct ibuf *buf)
{ {
return (buf->max - buf->wpos); return (buf->max - buf->wpos);
} }
void void
buf_close(struct msgbuf *msgbuf, struct buf *buf) ibuf_close(struct msgbuf *msgbuf, struct ibuf *buf)
{ {
buf_enqueue(msgbuf, buf); ibuf_enqueue(msgbuf, buf);
} }
int int
buf_write(struct msgbuf *msgbuf) ibuf_write(struct msgbuf *msgbuf)
{ {
struct iovec iov[IOV_MAX]; struct iovec iov[IOV_MAX];
struct buf *buf; struct ibuf *buf;
unsigned int i = 0; unsigned int i = 0;
ssize_t n; ssize_t n;
@ -176,7 +176,7 @@ buf_write(struct msgbuf *msgbuf)
} }
void void
buf_free(struct buf *buf) ibuf_free(struct ibuf *buf)
{ {
free(buf->buf); free(buf->buf);
free(buf); free(buf);
@ -193,14 +193,14 @@ msgbuf_init(struct msgbuf *msgbuf)
void void
msgbuf_drain(struct msgbuf *msgbuf, size_t n) msgbuf_drain(struct msgbuf *msgbuf, size_t n)
{ {
struct buf *buf, *next; struct ibuf *buf, *next;
for (buf = TAILQ_FIRST(&msgbuf->bufs); buf != NULL && n > 0; for (buf = TAILQ_FIRST(&msgbuf->bufs); buf != NULL && n > 0;
buf = next) { buf = next) {
next = TAILQ_NEXT(buf, entry); next = TAILQ_NEXT(buf, entry);
if (buf->rpos + n >= buf->wpos) { if (buf->rpos + n >= buf->wpos) {
n -= buf->wpos - buf->rpos; n -= buf->wpos - buf->rpos;
buf_dequeue(msgbuf, buf); ibuf_dequeue(msgbuf, buf);
} else { } else {
buf->rpos += n; buf->rpos += n;
n = 0; n = 0;
@ -211,17 +211,17 @@ msgbuf_drain(struct msgbuf *msgbuf, size_t n)
void void
msgbuf_clear(struct msgbuf *msgbuf) msgbuf_clear(struct msgbuf *msgbuf)
{ {
struct buf *buf; struct ibuf *buf;
while ((buf = TAILQ_FIRST(&msgbuf->bufs)) != NULL) while ((buf = TAILQ_FIRST(&msgbuf->bufs)) != NULL)
buf_dequeue(msgbuf, buf); ibuf_dequeue(msgbuf, buf);
} }
int int
msgbuf_write(struct msgbuf *msgbuf) msgbuf_write(struct msgbuf *msgbuf)
{ {
struct iovec iov[IOV_MAX]; struct iovec iov[IOV_MAX];
struct buf *buf; struct ibuf *buf;
unsigned int i = 0; unsigned int i = 0;
ssize_t n; ssize_t n;
struct msghdr msg; struct msghdr msg;
@ -284,14 +284,14 @@ msgbuf_write(struct msgbuf *msgbuf)
} }
void void
buf_enqueue(struct msgbuf *msgbuf, struct buf *buf) ibuf_enqueue(struct msgbuf *msgbuf, struct ibuf *buf)
{ {
TAILQ_INSERT_TAIL(&msgbuf->bufs, buf, entry); TAILQ_INSERT_TAIL(&msgbuf->bufs, buf, entry);
msgbuf->queued++; msgbuf->queued++;
} }
void void
buf_dequeue(struct msgbuf *msgbuf, struct buf *buf) ibuf_dequeue(struct msgbuf *msgbuf, struct ibuf *buf)
{ {
TAILQ_REMOVE(&msgbuf->bufs, buf, entry); TAILQ_REMOVE(&msgbuf->bufs, buf, entry);
@ -299,5 +299,5 @@ buf_dequeue(struct msgbuf *msgbuf, struct buf *buf)
close(buf->fd); close(buf->fd);
msgbuf->queued--; msgbuf->queued--;
buf_free(buf); ibuf_free(buf);
} }

20
imsg.c
View File

@ -135,7 +135,7 @@ int
imsg_compose(struct imsgbuf *ibuf, u_int32_t type, u_int32_t peerid, imsg_compose(struct imsgbuf *ibuf, u_int32_t type, u_int32_t peerid,
pid_t pid, int fd, void *data, u_int16_t datalen) pid_t pid, int fd, void *data, u_int16_t datalen)
{ {
struct buf *wbuf; struct ibuf *wbuf;
if ((wbuf = imsg_create(ibuf, type, peerid, pid, datalen)) == NULL) if ((wbuf = imsg_create(ibuf, type, peerid, pid, datalen)) == NULL)
return (-1); return (-1);
@ -154,7 +154,7 @@ int
imsg_composev(struct imsgbuf *ibuf, u_int32_t type, u_int32_t peerid, imsg_composev(struct imsgbuf *ibuf, u_int32_t type, u_int32_t peerid,
pid_t pid, int fd, const struct iovec *iov, int iovcnt) pid_t pid, int fd, const struct iovec *iov, int iovcnt)
{ {
struct buf *wbuf; struct ibuf *wbuf;
int i, datalen = 0; int i, datalen = 0;
for (i = 0; i < iovcnt; i++) for (i = 0; i < iovcnt; i++)
@ -175,11 +175,11 @@ imsg_composev(struct imsgbuf *ibuf, u_int32_t type, u_int32_t peerid,
} }
/* ARGSUSED */ /* ARGSUSED */
struct buf * struct ibuf *
imsg_create(struct imsgbuf *ibuf, u_int32_t type, u_int32_t peerid, imsg_create(struct imsgbuf *ibuf, u_int32_t type, u_int32_t peerid,
pid_t pid, u_int16_t datalen) pid_t pid, u_int16_t datalen)
{ {
struct buf *wbuf; struct ibuf *wbuf;
struct imsg_hdr hdr; struct imsg_hdr hdr;
datalen += IMSG_HEADER_SIZE; datalen += IMSG_HEADER_SIZE;
@ -193,7 +193,7 @@ imsg_create(struct imsgbuf *ibuf, u_int32_t type, u_int32_t peerid,
hdr.peerid = peerid; hdr.peerid = peerid;
if ((hdr.pid = pid) == 0) if ((hdr.pid = pid) == 0)
hdr.pid = ibuf->pid; hdr.pid = ibuf->pid;
if ((wbuf = buf_dynamic(datalen, MAX_IMSGSIZE)) == NULL) { if ((wbuf = ibuf_dynamic(datalen, MAX_IMSGSIZE)) == NULL) {
return (NULL); return (NULL);
} }
if (imsg_add(wbuf, &hdr, sizeof(hdr)) == -1) if (imsg_add(wbuf, &hdr, sizeof(hdr)) == -1)
@ -203,18 +203,18 @@ imsg_create(struct imsgbuf *ibuf, u_int32_t type, u_int32_t peerid,
} }
int int
imsg_add(struct buf *msg, void *data, u_int16_t datalen) imsg_add(struct ibuf *msg, void *data, u_int16_t datalen)
{ {
if (datalen) if (datalen)
if (buf_add(msg, data, datalen) == -1) { if (ibuf_add(msg, data, datalen) == -1) {
buf_free(msg); ibuf_free(msg);
return (-1); return (-1);
} }
return (datalen); return (datalen);
} }
void void
imsg_close(struct imsgbuf *ibuf, struct buf *msg) imsg_close(struct imsgbuf *ibuf, struct ibuf *msg)
{ {
struct imsg_hdr *hdr; struct imsg_hdr *hdr;
@ -226,7 +226,7 @@ imsg_close(struct imsgbuf *ibuf, struct buf *msg)
hdr->len = (u_int16_t)msg->wpos; hdr->len = (u_int16_t)msg->wpos;
buf_close(&ibuf->w, msg); ibuf_close(&ibuf->w, msg);
} }
void void

40
imsg.h
View File

@ -18,12 +18,12 @@
* OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
*/ */
#define READ_BUF_SIZE 65535 #define IBUF_READ_SIZE 65535
#define IMSG_HEADER_SIZE sizeof(struct imsg_hdr) #define IMSG_HEADER_SIZE sizeof(struct imsg_hdr)
#define MAX_IMSGSIZE 16384 #define MAX_IMSGSIZE 16384
struct buf { struct ibuf {
TAILQ_ENTRY(buf) entry; TAILQ_ENTRY(ibuf) entry;
u_char *buf; u_char *buf;
size_t size; size_t size;
size_t max; size_t max;
@ -33,13 +33,13 @@ struct buf {
}; };
struct msgbuf { struct msgbuf {
TAILQ_HEAD(, buf) bufs; TAILQ_HEAD(, ibuf) bufs;
u_int32_t queued; u_int32_t queued;
int fd; int fd;
}; };
struct buf_read { struct ibuf_read {
u_char buf[READ_BUF_SIZE]; u_char buf[IBUF_READ_SIZE];
u_char *rptr; u_char *rptr;
size_t wpos; size_t wpos;
}; };
@ -51,7 +51,7 @@ struct imsg_fd {
struct imsgbuf { struct imsgbuf {
TAILQ_HEAD(, imsg_fd) fds; TAILQ_HEAD(, imsg_fd) fds;
struct buf_read r; struct ibuf_read r;
struct msgbuf w; struct msgbuf w;
int fd; int fd;
pid_t pid; pid_t pid;
@ -75,16 +75,16 @@ struct imsg {
/* buffer.c */ /* buffer.c */
struct buf *buf_open(size_t); struct ibuf *ibuf_open(size_t);
struct buf *buf_dynamic(size_t, size_t); struct ibuf *ibuf_dynamic(size_t, size_t);
int buf_add(struct buf *, const void *, size_t); int ibuf_add(struct ibuf *, const void *, size_t);
void *buf_reserve(struct buf *, size_t); void *ibuf_reserve(struct ibuf *, size_t);
void *buf_seek(struct buf *, size_t, size_t); void *ibuf_seek(struct ibuf *, size_t, size_t);
size_t buf_size(struct buf *); size_t ibuf_size(struct ibuf *);
size_t buf_left(struct buf *); size_t ibuf_left(struct ibuf *);
void buf_close(struct msgbuf *, struct buf *); void ibuf_close(struct msgbuf *, struct ibuf *);
int buf_write(struct msgbuf *); int ibuf_write(struct msgbuf *);
void buf_free(struct buf *); void ibuf_free(struct ibuf *);
void msgbuf_init(struct msgbuf *); void msgbuf_init(struct msgbuf *);
void msgbuf_clear(struct msgbuf *); void msgbuf_clear(struct msgbuf *);
int msgbuf_write(struct msgbuf *); int msgbuf_write(struct msgbuf *);
@ -98,10 +98,10 @@ int imsg_compose(struct imsgbuf *, u_int32_t, u_int32_t, pid_t,
int, void *, u_int16_t); int, void *, u_int16_t);
int imsg_composev(struct imsgbuf *, u_int32_t, u_int32_t, pid_t, int imsg_composev(struct imsgbuf *, u_int32_t, u_int32_t, pid_t,
int, const struct iovec *, int); int, const struct iovec *, int);
struct buf *imsg_create(struct imsgbuf *, u_int32_t, u_int32_t, pid_t, struct ibuf *imsg_create(struct imsgbuf *, u_int32_t, u_int32_t, pid_t,
u_int16_t); u_int16_t);
int imsg_add(struct buf *, void *, u_int16_t); int imsg_add(struct ibuf *, void *, u_int16_t);
void imsg_close(struct imsgbuf *, struct buf *); void imsg_close(struct imsgbuf *, struct ibuf *);
void imsg_free(struct imsg *); void imsg_free(struct imsg *);
int imsg_flush(struct imsgbuf *); int imsg_flush(struct imsgbuf *);
void imsg_clear(struct imsgbuf *); void imsg_clear(struct imsgbuf *);