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| author | Simon J. Gerraty <sjg@FreeBSD.org> | 2024-02-12 22:35:01 +0000 |
|---|---|---|
| committer | Simon J. Gerraty <sjg@FreeBSD.org> | 2024-02-12 22:35:01 +0000 |
| commit | f616d61ab6b071e5fbfdbae7033a9ef04c1444ad (patch) | |
| tree | 47edbc56733109d8f3552b3ac2247120e5304f8a /lib/libsecureboot/vectx.c | |
| parent | 57e27ff07aff35289892f79288bebf76a3c31fec (diff) | |
| download | src-f616d61ab6b071e5fbfdbae7033a9ef04c1444ad.tar.gz src-f616d61ab6b071e5fbfdbae7033a9ef04c1444ad.zip | |
Diffstat (limited to 'lib/libsecureboot/vectx.c')
| -rw-r--r-- | lib/libsecureboot/vectx.c | 26 |
1 files changed, 19 insertions, 7 deletions
diff --git a/lib/libsecureboot/vectx.c b/lib/libsecureboot/vectx.c index dba728421ce4..2d56830cd81d 100644 --- a/lib/libsecureboot/vectx.c +++ b/lib/libsecureboot/vectx.c @@ -306,19 +306,31 @@ vectx_lseek(struct vectx *ctx, off_t off, int whence) DEBUG_PRINTF(3, ("%s(%s, %ld, %d)\n", __func__, ctx->vec_path, (long)off, whence)); if (whence == SEEK_END && off <= 0) { - if (ctx->vec_closing && ctx->vec_hashed < ctx->vec_size) { - DEBUG_PRINTF(3, ("%s: SEEK_END %ld\n", - __func__, - (long)(ctx->vec_size - ctx->vec_hashed))); + if (ctx->vec_size < 0) { + if (ctx->vec_closing) { + /* size unknown - read until EOF */ + do { + n = vectx_read(ctx, buf, PAGE_SIZE); + if (n < 0) + return (n); + } while (n > 0); + return (ctx->vec_off); + } + } else { + if (ctx->vec_closing && ctx->vec_hashed < ctx->vec_size) { + DEBUG_PRINTF(3, ("%s: SEEK_END %ld\n", + __func__, + (long)(ctx->vec_size - ctx->vec_hashed))); + } + whence = SEEK_SET; + off += ctx->vec_size; } - whence = SEEK_SET; - off += ctx->vec_size; } else if (whence == SEEK_CUR) { whence = SEEK_SET; off += ctx->vec_off; } if (whence != SEEK_SET || - off > ctx->vec_size) { + (off > ctx->vec_size && ctx->vec_size > 0)) { printf("ERROR: %s: unsupported operation: whence=%d off=%ld -> %ld\n", __func__, whence, (long)ctx->vec_off, (long)off); return (-1); |