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lbutils/file: only support real pread/pwrite

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the portable version was written for fun, but
it's bloat, and makes the code hard to read.

every unix since about 2005 has these functions.

Signed-off-by: Leah Rowe <leah@libreboot.org>
This commit is contained in:
Leah Rowe
2026-03-31 12:22:42 +01:00
parent a769537554
commit 6d9f162f5b
4 changed files with 24 additions and 201 deletions
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util/libreboot-utils/lib/io.c
+4 -8
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@@ -104,8 +104,7 @@ read_file(void)
/* read main file
*/
_r = rw_file_exact(f->gbe_fd, f->buf, f->gbe_file_size,
0, IO_PREAD, NO_LOOP_EAGAIN, LOOP_EINTR,
MAX_ZERO_RW_RETRY, OFF_ERR);
0, IO_PREAD, MAX_ZERO_RW_RETRY, OFF_ERR);
if (_r < 0)
err_exit(errno, "%s: read failed", f->fname);
@@ -113,8 +112,7 @@ read_file(void)
/* copy to tmpfile
*/
_r = rw_file_exact(f->tmp_fd, f->buf, f->gbe_file_size,
0, IO_PWRITE, NO_LOOP_EAGAIN, LOOP_EINTR,
MAX_ZERO_RW_RETRY, OFF_ERR);
0, IO_PWRITE, MAX_ZERO_RW_RETRY, OFF_ERR);
if (_r < 0)
err_exit(errno, "%s: %s: copy failed",
@@ -137,8 +135,7 @@ read_file(void)
err_exit(errno, "%s: fsync (tmpfile copy)", f->tname);
_r = rw_file_exact(f->tmp_fd, f->bufcmp, f->gbe_file_size,
0, IO_PREAD, NO_LOOP_EAGAIN, LOOP_EINTR,
MAX_ZERO_RW_RETRY, OFF_ERR);
0, IO_PREAD, MAX_ZERO_RW_RETRY, OFF_ERR);
if (_r < 0)
err_exit(errno, "%s: read failed (cmp)", f->tname);
@@ -570,8 +567,7 @@ rw_gbe_file_exact(int fd, unsigned char *mem, size_t nrw,
goto err_rw_gbe_file_exact;
r = rw_file_exact(fd, mem, nrw, off, rw_type,
NO_LOOP_EAGAIN, LOOP_EINTR, MAX_ZERO_RW_RETRY,
OFF_ERR);
MAX_ZERO_RW_RETRY, OFF_ERR);
return rw_over_nrw(r, nrw);