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grub2/0163-grub-core-loader-machoXX.c-Remove-nested-functions.patch
Peter Jones f74b50e380 Rebase to upstream, fix a pile of bugs. The usual. 
Signed-off-by: Peter Jones <pjones@redhat.com>
2013-06-12 15:37:08 -04:00

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From ce1cd200024547db7be52f08d80ccb2a3ece94c3 Mon Sep 17 00:00:00 2001
From: Vladimir 'phcoder' Serbinenko <phcoder@gmail.com>
Date: Wed, 27 Feb 2013 20:56:23 +0100
Subject: [PATCH 163/482] * grub-core/loader/machoXX.c: Remove nested
functions.
---
ChangeLog | 4 +
grub-core/loader/machoXX.c | 261 +++++++++++++++++++++++++--------------------
2 files changed, 148 insertions(+), 117 deletions(-)
diff --git a/ChangeLog b/ChangeLog
index dbecfef..bb02830 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,7 @@
+2013-02-27 Vladimir Serbinenko <phcoder@gmail.com>
+
+ * grub-core/loader/machoXX.c: Remove nested functions.
+
2013-02-27 Colin Watson <cjwatson@ubuntu.com>
Remove nested functions from disk and file read hooks.
diff --git a/grub-core/loader/machoXX.c b/grub-core/loader/machoXX.c
index 5b78a61..3a382b3 100644
--- a/grub-core/loader/machoXX.c
+++ b/grub-core/loader/machoXX.c
@@ -79,7 +79,7 @@ SUFFIX (grub_macho_parse) (grub_macho_t macho, const char *filename)
}
}
-typedef int NESTED_FUNC_ATTR (*grub_macho_iter_hook_t)
+typedef int (*grub_macho_iter_hook_t)
(grub_macho_t , struct grub_macho_cmd *,
void *);
@@ -200,46 +200,59 @@ SUFFIX (grub_macho_readfile) (grub_macho_t macho,
return GRUB_ERR_NONE;
}
+struct calcsize_ctx
+{
+ int flags;
+ int nr_phdrs;
+ grub_macho_addr_t *segments_start;
+ grub_macho_addr_t *segments_end;
+};
+
+/* Run through the program headers to calculate the total memory size we
+ should claim. */
+static int
+calcsize (grub_macho_t _macho __attribute__ ((unused)),
+ struct grub_macho_cmd *hdr0,
+ void *_arg)
+{
+ grub_macho_segment_t *hdr = (grub_macho_segment_t *) hdr0;
+ struct calcsize_ctx *ctx = _arg;
+ if (hdr->cmd != GRUB_MACHO_CMD_SEGMENT)
+ return 0;
+
+ if (! hdr->vmsize)
+ return 0;
+
+ if (! hdr->filesize && (ctx->flags & GRUB_MACHO_NOBSS))
+ return 0;
+
+ ctx->nr_phdrs++;
+ if (hdr->vmaddr < *ctx->segments_start)
+ *ctx->segments_start = hdr->vmaddr;
+ if (hdr->vmaddr + hdr->vmsize > *ctx->segments_end)
+ *ctx->segments_end = hdr->vmaddr + hdr->vmsize;
+ return 0;
+}
+
/* Calculate the amount of memory spanned by the segments. */
grub_err_t
SUFFIX (grub_macho_size) (grub_macho_t macho, grub_macho_addr_t *segments_start,
grub_macho_addr_t *segments_end, int flags,
const char *filename)
{
- int nr_phdrs = 0;
-
- /* Run through the program headers to calculate the total memory size we
- should claim. */
- auto int NESTED_FUNC_ATTR calcsize (grub_macho_t _macho,
- struct grub_macho_cmd *phdr, void *_arg);
- int NESTED_FUNC_ATTR calcsize (grub_macho_t _macho __attribute__ ((unused)),
- struct grub_macho_cmd *hdr0,
- void *_arg __attribute__ ((unused)))
- {
- grub_macho_segment_t *hdr = (grub_macho_segment_t *) hdr0;
- if (hdr->cmd != GRUB_MACHO_CMD_SEGMENT)
- return 0;
-
- if (! hdr->vmsize)
- return 0;
-
- if (! hdr->filesize && (flags & GRUB_MACHO_NOBSS))
- return 0;
-
- nr_phdrs++;
- if (hdr->vmaddr < *segments_start)
- *segments_start = hdr->vmaddr;
- if (hdr->vmaddr + hdr->vmsize > *segments_end)
- *segments_end = hdr->vmaddr + hdr->vmsize;
- return 0;
- }
+ struct calcsize_ctx ctx = {
+ .flags = flags,
+ .nr_phdrs = 0,
+ .segments_start = segments_start,
+ .segments_end = segments_end,
+ };
*segments_start = (grub_macho_addr_t) -1;
*segments_end = 0;
- grub_macho_cmds_iterate (macho, calcsize, 0, filename);
+ grub_macho_cmds_iterate (macho, calcsize, &ctx, filename);
- if (nr_phdrs == 0)
+ if (ctx.nr_phdrs == 0)
return grub_error (GRUB_ERR_BAD_OS, "no program headers present");
if (*segments_end < *segments_start)
@@ -249,109 +262,123 @@ SUFFIX (grub_macho_size) (grub_macho_t macho, grub_macho_addr_t *segments_start,
return GRUB_ERR_NONE;
}
+struct do_load_ctx
+{
+ int flags;
+ char *offset;
+ const char *filename;
+ int *darwin_version;
+};
+
+static int
+do_load(grub_macho_t _macho,
+ struct grub_macho_cmd *hdr0,
+ void *_arg)
+{
+ grub_macho_segment_t *hdr = (grub_macho_segment_t *) hdr0;
+ struct do_load_ctx *ctx = _arg;
+
+ if (hdr->cmd != GRUB_MACHO_CMD_SEGMENT)
+ return 0;
+
+ if (! hdr->filesize && (ctx->flags & GRUB_MACHO_NOBSS))
+ return 0;
+ if (! hdr->vmsize)
+ return 0;
+
+ if (hdr->filesize)
+ {
+ grub_ssize_t read, toread = min (hdr->filesize, hdr->vmsize);
+ if (_macho->uncompressedXX)
+ {
+ if (hdr->fileoff + (grub_size_t) toread
+ > _macho->uncompressed_sizeXX)
+ read = -1;
+ else
+ {
+ read = toread;
+ grub_memcpy (ctx->offset + hdr->vmaddr,
+ _macho->uncompressedXX + hdr->fileoff, read);
+ }
+ }
+ else
+ {
+ if (grub_file_seek (_macho->file, hdr->fileoff
+ + _macho->offsetXX) == (grub_off_t) -1)
+ return 1;
+ read = grub_file_read (_macho->file, ctx->offset + hdr->vmaddr,
+ toread);
+ }
+
+ if (read != toread)
+ {
+ /* XXX How can we free memory from `load_hook'? */
+ if (!grub_errno)
+ grub_error (GRUB_ERR_BAD_OS, N_("premature end of file %s"),
+ ctx->filename);
+
+ return 1;
+ }
+ if (ctx->darwin_version)
+ {
+ const char *ptr = ctx->offset + hdr->vmaddr;
+ const char *end = ptr + min (hdr->filesize, hdr->vmsize)
+ - (sizeof ("Darwin Kernel Version ") - 1);
+ for (; ptr < end; ptr++)
+ if (grub_memcmp (ptr, "Darwin Kernel Version ",
+ sizeof ("Darwin Kernel Version ") - 1) == 0)
+ {
+ ptr += sizeof ("Darwin Kernel Version ") - 1;
+ *ctx->darwin_version = 0;
+ end += (sizeof ("Darwin Kernel Version ") - 1);
+ while (ptr < end && grub_isdigit (*ptr))
+ *ctx->darwin_version = (*ptr++ - '0') + *ctx->darwin_version * 10;
+ break;
+ }
+ }
+ }
+
+ if (hdr->filesize < hdr->vmsize)
+ grub_memset (ctx->offset + hdr->vmaddr + hdr->filesize,
+ 0, hdr->vmsize - hdr->filesize);
+ return 0;
+}
+
/* Load every loadable segment into memory specified by `_load_hook'. */
grub_err_t
SUFFIX (grub_macho_load) (grub_macho_t macho, const char *filename,
char *offset, int flags, int *darwin_version)
{
- auto int NESTED_FUNC_ATTR do_load(grub_macho_t _macho,
- struct grub_macho_cmd *hdr0,
- void *_arg __attribute__ ((unused)));
- int NESTED_FUNC_ATTR do_load(grub_macho_t _macho,
- struct grub_macho_cmd *hdr0,
- void *_arg __attribute__ ((unused)))
- {
- grub_macho_segment_t *hdr = (grub_macho_segment_t *) hdr0;
-
- if (hdr->cmd != GRUB_MACHO_CMD_SEGMENT)
- return 0;
-
- if (! hdr->filesize && (flags & GRUB_MACHO_NOBSS))
- return 0;
- if (! hdr->vmsize)
- return 0;
-
- if (hdr->filesize)
- {
- grub_ssize_t read, toread = min (hdr->filesize, hdr->vmsize);
- if (macho->uncompressedXX)
- {
- if (hdr->fileoff + (grub_size_t) toread
- > _macho->uncompressed_sizeXX)
- read = -1;
- else
- {
- read = toread;
- grub_memcpy (offset + hdr->vmaddr,
- _macho->uncompressedXX + hdr->fileoff, read);
- }
- }
- else
- {
- if (grub_file_seek (_macho->file, hdr->fileoff
- + _macho->offsetXX) == (grub_off_t) -1)
- return 1;
- read = grub_file_read (_macho->file, offset + hdr->vmaddr,
- toread);
- }
-
- if (read != toread)
- {
- /* XXX How can we free memory from `load_hook'? */
- if (!grub_errno)
- grub_error (GRUB_ERR_BAD_OS, N_("premature end of file %s"),
- filename);
-
- return 1;
- }
- if (darwin_version)
- {
- const char *ptr = offset + hdr->vmaddr;
- const char *end = ptr + min (hdr->filesize, hdr->vmsize)
- - (sizeof ("Darwin Kernel Version ") - 1);
- for (; ptr < end; ptr++)
- if (grub_memcmp (ptr, "Darwin Kernel Version ",
- sizeof ("Darwin Kernel Version ") - 1) == 0)
- {
- ptr += sizeof ("Darwin Kernel Version ") - 1;
- *darwin_version = 0;
- end += (sizeof ("Darwin Kernel Version ") - 1);
- while (ptr < end && grub_isdigit (*ptr))
- *darwin_version = (*ptr++ - '0') + *darwin_version * 10;
- break;
- }
- }
- }
-
- if (hdr->filesize < hdr->vmsize)
- grub_memset (offset + hdr->vmaddr + hdr->filesize,
- 0, hdr->vmsize - hdr->filesize);
- return 0;
- }
+ struct do_load_ctx ctx = {
+ .flags = flags,
+ .offset = offset,
+ .filename = filename,
+ .darwin_version = darwin_version
+ };
if (darwin_version)
*darwin_version = 0;
- grub_macho_cmds_iterate (macho, do_load, 0, filename);
+ grub_macho_cmds_iterate (macho, do_load, &ctx, filename);
return grub_errno;
}
+static int
+find_entry_point (grub_macho_t _macho __attribute__ ((unused)),
+ struct grub_macho_cmd *hdr,
+ void *_arg)
+{
+ grub_macho_addr_t *entry_point = _arg;
+ if (hdr->cmd == GRUB_MACHO_CMD_THREAD)
+ *entry_point = ((grub_macho_thread_t *) hdr)->entry_point;
+ return 0;
+}
+
grub_macho_addr_t
SUFFIX (grub_macho_get_entry_point) (grub_macho_t macho, const char *filename)
{
grub_macho_addr_t entry_point = 0;
- auto int NESTED_FUNC_ATTR hook(grub_macho_t _macho,
- struct grub_macho_cmd *hdr,
- void *_arg __attribute__ ((unused)));
- int NESTED_FUNC_ATTR hook(grub_macho_t _macho __attribute__ ((unused)),
- struct grub_macho_cmd *hdr,
- void *_arg __attribute__ ((unused)))
- {
- if (hdr->cmd == GRUB_MACHO_CMD_THREAD)
- entry_point = ((grub_macho_thread_t *) hdr)->entry_point;
- return 0;
- }
- grub_macho_cmds_iterate (macho, hook, 0, filename);
+ grub_macho_cmds_iterate (macho, find_entry_point, &entry_point, filename);
return entry_point;
}
--
1.8.2.1
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