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-rw-r--r--include/common.h33
-rw-r--r--jffsX-utils/jffs2dump.c32
-rw-r--r--jffsX-utils/jffs2reader.c2
-rw-r--r--misc-utils/docfdisk.c6
-rw-r--r--misc-utils/ftl_check.c2
-rw-r--r--nand-utils/nftl_format.c24
-rw-r--r--nand-utils/nftldump.c10
-rw-r--r--tests/ubi-tests/integ.c10
8 files changed, 82 insertions, 37 deletions
diff --git a/include/common.h b/include/common.h
index 93ef7f3..32b5d23 100644
--- a/include/common.h
+++ b/include/common.h
@@ -28,6 +28,7 @@
#include <errno.h>
#include <features.h>
#include <inttypes.h>
+#include <unistd.h>
#include <sys/sysmacros.h>
#include "config.h"
@@ -226,6 +227,38 @@ long long util_get_bytes(const char *str);
void util_print_bytes(long long bytes, int bracket);
int util_srand(void);
+/*
+ * The following helpers are here to avoid compiler complaints about unchecked
+ * return code.
+ * FIXME: The proper fix would be to check the return code in all those places,
+ * but it's usually placed in old code which have no proper exit path and
+ * handling errors requires rewriting a lot of code.
+ *
+ * WARNING: Please do not use these helpers in new code. Instead, make sure
+ * you check the function return code and provide coherent error handling in
+ * case of error.
+ */
+static inline ssize_t read_nocheck(int fd, void *buf, size_t count)
+{
+ return read(fd, buf, count);
+}
+
+static inline ssize_t write_nocheck(int fd, void *buf, size_t count)
+{
+ return write(fd, buf, count);
+}
+
+static inline ssize_t pread_nocheck(int fd, void *buf, size_t count,
+ off_t offset)
+{
+ return pread(fd, buf, count, offset);
+}
+
+static inline ssize_t pwrite_nocheck(int fd, void *buf, size_t count,
+ off_t offset)
+{
+ return pwrite(fd, buf, count, offset);
+}
#ifdef __cplusplus
}
#endif
diff --git a/jffsX-utils/jffs2dump.c b/jffsX-utils/jffs2dump.c
index 4b3164b..a8d082b 100644
--- a/jffsX-utils/jffs2dump.c
+++ b/jffsX-utils/jffs2dump.c
@@ -498,7 +498,7 @@ void do_endianconvert (void)
/* Skip empty space */
if (je16_to_cpu (node->u.magic) == 0xFFFF && je16_to_cpu (node->u.nodetype) == 0xFFFF) {
- write (fd, p, 4);
+ write_nocheck (fd, p, 4);
p += 4;
continue;
}
@@ -507,7 +507,7 @@ void do_endianconvert (void)
printf ("Wrong bitmask at 0x%08zx, 0x%04x\n", p - data, je16_to_cpu (node->u.magic));
newnode.u.magic = cnv_e16 (node->u.magic);
newnode.u.nodetype = cnv_e16 (node->u.nodetype);
- write (fd, &newnode, 4);
+ write_nocheck (fd, &newnode, 4);
p += 4;
continue;
}
@@ -550,8 +550,8 @@ void do_endianconvert (void)
newnode.i.node_crc = cpu_to_e32 (mtd_crc32 (0, &newnode, sizeof (struct jffs2_raw_inode) - 8));
- write (fd, &newnode, sizeof (struct jffs2_raw_inode));
- write (fd, p + sizeof (struct jffs2_raw_inode), PAD (je32_to_cpu (node->i.totlen) - sizeof (struct jffs2_raw_inode)));
+ write_nocheck (fd, &newnode, sizeof (struct jffs2_raw_inode));
+ write_nocheck (fd, p + sizeof (struct jffs2_raw_inode), PAD (je32_to_cpu (node->i.totlen) - sizeof (struct jffs2_raw_inode)));
p += PAD(je32_to_cpu (node->i.totlen));
break;
@@ -575,8 +575,8 @@ void do_endianconvert (void)
else
newnode.d.name_crc = cnv_e32 (node->d.name_crc);
- write (fd, &newnode, sizeof (struct jffs2_raw_dirent));
- write (fd, p + sizeof (struct jffs2_raw_dirent), PAD (je32_to_cpu (node->d.totlen) - sizeof (struct jffs2_raw_dirent)));
+ write_nocheck (fd, &newnode, sizeof (struct jffs2_raw_dirent));
+ write_nocheck (fd, p + sizeof (struct jffs2_raw_dirent), PAD (je32_to_cpu (node->d.totlen) - sizeof (struct jffs2_raw_dirent)));
p += PAD(je32_to_cpu (node->d.totlen));
break;
@@ -596,8 +596,8 @@ void do_endianconvert (void)
newnode.x.data_crc = cnv_e32 (node->x.data_crc);
newnode.x.node_crc = cpu_to_e32 (mtd_crc32 (0, &newnode, sizeof (struct jffs2_raw_xattr) - sizeof (newnode.x.node_crc)));
- write (fd, &newnode, sizeof (struct jffs2_raw_xattr));
- write (fd, p + sizeof (struct jffs2_raw_xattr), PAD (je32_to_cpu (node->d.totlen) - sizeof (struct jffs2_raw_xattr)));
+ write_nocheck (fd, &newnode, sizeof (struct jffs2_raw_xattr));
+ write_nocheck (fd, p + sizeof (struct jffs2_raw_xattr), PAD (je32_to_cpu (node->d.totlen) - sizeof (struct jffs2_raw_xattr)));
p += PAD(je32_to_cpu (node->x.totlen));
break;
@@ -620,10 +620,10 @@ void do_endianconvert (void)
newnode.u.totlen = cnv_e32 (node->u.totlen);
newnode.u.hdr_crc = cpu_to_e32 (mtd_crc32 (0, &newnode, sizeof (struct jffs2_unknown_node) - 4));
- write (fd, &newnode, sizeof (struct jffs2_unknown_node));
+ write_nocheck (fd, &newnode, sizeof (struct jffs2_unknown_node));
len = PAD(je32_to_cpu (node->u.totlen) - sizeof (struct jffs2_unknown_node));
if (len > 0)
- write (fd, p + sizeof (struct jffs2_unknown_node), len);
+ write_nocheck (fd, p + sizeof (struct jffs2_unknown_node), len);
p += PAD(je32_to_cpu (node->u.totlen));
break;
@@ -716,15 +716,15 @@ void do_endianconvert (void)
je32_to_cpu (node->s.totlen) - sizeof (struct jffs2_raw_summary)));
// write out new node header
- write(fd, &newnode, sizeof (struct jffs2_raw_summary));
+ write_nocheck(fd, &newnode, sizeof (struct jffs2_raw_summary));
// write out new summary data
- write(fd, &node->s.sum, sum_len + sizeof (struct jffs2_sum_marker));
+ write_nocheck(fd, &node->s.sum, sum_len + sizeof (struct jffs2_sum_marker));
break;
}
case 0xffff:
- write (fd, p, 4);
+ write_nocheck (fd, p, 4);
p += 4;
break;
@@ -772,8 +772,8 @@ int main(int argc, char **argv)
printf ("Peeling data out of combined data/oob image\n");
while (len) {
// read image data
- read (fd, &data[idx], datsize);
- read (fd, oob, oobsize);
+ read_nocheck (fd, &data[idx], datsize);
+ read_nocheck (fd, oob, oobsize);
idx += datsize;
imglen -= oobsize;
len -= datsize + oobsize;
@@ -781,7 +781,7 @@ int main(int argc, char **argv)
} else {
// read image data
- read (fd, data, imglen);
+ read_nocheck (fd, data, imglen);
}
// Close the input file
close(fd);
diff --git a/jffsX-utils/jffs2reader.c b/jffsX-utils/jffs2reader.c
index 09d1d89..16870ba 100644
--- a/jffsX-utils/jffs2reader.c
+++ b/jffsX-utils/jffs2reader.c
@@ -859,7 +859,7 @@ void catfile(char *o, size_t size, char *path, char *b, size_t bsize,
ri = find_raw_inode(o, size, ino);
putblock(b, bsize, rsize, ri);
- write(1, b, *rsize);
+ write_nocheck(1, b, *rsize);
}
/* usage example */
diff --git a/misc-utils/docfdisk.c b/misc-utils/docfdisk.c
index 9956de5..b363662 100644
--- a/misc-utils/docfdisk.c
+++ b/misc-utils/docfdisk.c
@@ -275,7 +275,11 @@ int main(int argc, char **argv)
show_header(mhoffs);
printf("\nReady to update device. Type 'yes' to proceed, anything else to abort: ");
- fgets(line, sizeof(line), stdin);
+ if (!fgets(line, sizeof(line), stdin)) {
+ printf("Failed to retrieve input chars!\n");
+ return 1;
+ }
+
if (strcmp("yes\n", line))
return 0;
printf("Updating MediaHeader...\n");
diff --git a/misc-utils/ftl_check.c b/misc-utils/ftl_check.c
index d7d2e8b..970d968 100644
--- a/misc-utils/ftl_check.c
+++ b/misc-utils/ftl_check.c
@@ -95,7 +95,7 @@ static void check_partition(int fd)
perror("seek failed");
break;
}
- read(fd, &hdr, sizeof(hdr));
+ read_nocheck(fd, &hdr, sizeof(hdr));
if ((le32_to_cpu(hdr.FormattedSize) > 0) &&
(le32_to_cpu(hdr.FormattedSize) <= mtd.size) &&
(le16_to_cpu(hdr.NumEraseUnits) > 0) &&
diff --git a/nand-utils/nftl_format.c b/nand-utils/nftl_format.c
index 8485553..a329c59 100644
--- a/nand-utils/nftl_format.c
+++ b/nand-utils/nftl_format.c
@@ -93,15 +93,15 @@ static unsigned char check_block_2(unsigned long block)
erase.start = ofs;
for (blockofs = 0; blockofs < meminfo.erasesize; blockofs += 512) {
- pread(fd, readbuf, 512, ofs + blockofs);
+ pread_nocheck(fd, readbuf, 512, ofs + blockofs);
if (memcmp(readbuf, writebuf[0], 512)) {
/* Block wasn't 0xff after erase */
printf(": Block not 0xff after erase\n");
return ZONE_BAD_ORIGINAL;
}
- pwrite(fd, writebuf[1], 512, blockofs + ofs);
- pread(fd, readbuf, 512, blockofs + ofs);
+ pwrite_nocheck(fd, writebuf[1], 512, blockofs + ofs);
+ pread_nocheck(fd, readbuf, 512, blockofs + ofs);
if (memcmp(readbuf, writebuf[1], 512)) {
printf(": Block not zero after clearing\n");
return ZONE_BAD_ORIGINAL;
@@ -114,8 +114,8 @@ static unsigned char check_block_2(unsigned long block)
return ZONE_BAD_ORIGINAL;
}
for (blockofs = 0; blockofs < meminfo.erasesize; blockofs += 512) {
- pwrite(fd, writebuf[2], 512, blockofs + ofs);
- pread(fd, readbuf, 512, blockofs + ofs);
+ pwrite_nocheck(fd, writebuf[2], 512, blockofs + ofs);
+ pread_nocheck(fd, readbuf, 512, blockofs + ofs);
if (memcmp(readbuf, writebuf[2], 512)) {
printf(": Block not 0x5a after writing\n");
return ZONE_BAD_ORIGINAL;
@@ -127,8 +127,8 @@ static unsigned char check_block_2(unsigned long block)
return ZONE_BAD_ORIGINAL;
}
for (blockofs = 0; blockofs < meminfo.erasesize; blockofs += 512) {
- pwrite(fd, writebuf[3], 512, blockofs + ofs);
- pread(fd, readbuf, 512, blockofs + ofs);
+ pwrite_nocheck(fd, writebuf[3], 512, blockofs + ofs);
+ pread_nocheck(fd, readbuf, 512, blockofs + ofs);
if (memcmp(readbuf, writebuf[3], 512)) {
printf(": Block not 0xa5 after writing\n");
return ZONE_BAD_ORIGINAL;
@@ -181,7 +181,7 @@ static int checkbbt(void)
unsigned char bits;
int i, addr;
- if (pread(fd, bbt, 512, 0x800) < 0) {
+ if (pread_nocheck(fd, bbt, 512, 0x800) < 0) {
printf("%s: failed to read BBT, errno=%d\n", PROGRAM_NAME, errno);
return (-1);
}
@@ -402,9 +402,9 @@ int main(int argc, char **argv)
/* Phase 2. Writing NFTL Media Headers and Bad Unit Table */
printf("Phase 2.a Writing %s Media Header and Bad Unit Table\n", nftl);
- pwrite(fd, writebuf[0], 512, MediaUnit1 * meminfo.erasesize + MediaUnitOff1);
+ pwrite_nocheck(fd, writebuf[0], 512, MediaUnit1 * meminfo.erasesize + MediaUnitOff1);
for (ezone = 0; ezone < (meminfo.size / meminfo.erasesize); ezone += 512) {
- pwrite(fd, BadUnitTable + ezone, 512,
+ pwrite_nocheck(fd, BadUnitTable + ezone, 512,
(MediaUnit1 * meminfo.erasesize) + 512 * (1 + ezone / 512));
}
@@ -416,9 +416,9 @@ int main(int argc, char **argv)
le32_to_cpu(NFTLhdr->FormattedSize)/512);
#endif
printf("Phase 2.b Writing Spare %s Media Header and Spare Bad Unit Table\n", nftl);
- pwrite(fd, writebuf[0], 512, MediaUnit2 * meminfo.erasesize + MediaUnitOff2);
+ pwrite_nocheck(fd, writebuf[0], 512, MediaUnit2 * meminfo.erasesize + MediaUnitOff2);
for (ezone = 0; ezone < (meminfo.size / meminfo.erasesize); ezone += 512) {
- pwrite(fd, BadUnitTable + ezone, 512,
+ pwrite_nocheck(fd, BadUnitTable + ezone, 512,
(MediaUnit2 * meminfo.erasesize + MediaUnitOff2) + 512 * (1 + ezone / 512));
}
diff --git a/nand-utils/nftldump.c b/nand-utils/nftldump.c
index 32f4f2f..30332fe 100644
--- a/nand-utils/nftldump.c
+++ b/nand-utils/nftldump.c
@@ -39,6 +39,8 @@
#include <mtd/nftl-user.h>
#include <mtd_swab.h>
+#include "common.h"
+
static struct NFTLMediaHeader MedHead[2];
static mtd_info_t meminfo;
@@ -73,7 +75,7 @@ static unsigned int find_media_headers(void)
NumMedHeads = 0;
while (ofs < meminfo.size) {
- pread(fd, &MedHead[NumMedHeads], sizeof(struct NFTLMediaHeader), ofs);
+ pread_nocheck(fd, &MedHead[NumMedHeads], sizeof(struct NFTLMediaHeader), ofs);
if (!strncmp(MedHead[NumMedHeads].DataOrgID, "ANAND", 6)) {
SWAP16(MedHead[NumMedHeads].NumEraseUnits);
SWAP16(MedHead[NumMedHeads].FirstPhysicalEUN);
@@ -93,7 +95,7 @@ static unsigned int find_media_headers(void)
/* read BadUnitTable, I don't know why pread() does not work for
larger (7680 bytes) chunks */
for (i = 0; i < MAX_ERASE_ZONES; i += 512)
- pread(fd, &BadUnitTable[i], 512, ofs + 512 + i);
+ pread_nocheck(fd, &BadUnitTable[i], 512, ofs + 512 + i);
} else
printf("Second NFTL Media Header found at offset 0x%08lx\n",ofs);
NumMedHeads++;
@@ -233,10 +235,10 @@ static void dump_virtual_units(void)
if (lastgoodEUN == 0xffff)
memset(readbuf, 0, 512);
else
- pread(fd, readbuf, 512,
+ pread_nocheck(fd, readbuf, 512,
(lastgoodEUN * ERASESIZE) + (j * 512));
- write(ofd, readbuf, 512);
+ write_nocheck(ofd, readbuf, 512);
}
}
diff --git a/tests/ubi-tests/integ.c b/tests/ubi-tests/integ.c
index 733f367..94d546b 100644
--- a/tests/ubi-tests/integ.c
+++ b/tests/ubi-tests/integ.c
@@ -496,7 +496,9 @@ static void operate_on_ubi_device(struct ubi_device_info *ubi_device)
/* FIXME: Correctly make node */
maj = ubi_major(ubi_device->device_file_name);
sprintf(dev_name, "mknod %s c %d %d", s->device_file_name, maj, req.vol_id + 1);
- system(dev_name);
+ if (system(dev_name))
+ error_exit("Failed to create device file");
+
} else if (close(fd) == -1)
error_exit("Failed to close volume device file");
}
@@ -559,7 +561,11 @@ static void get_ubi_devices_info(void)
static void load_ubi(void)
{
- system("rmmod ubi");
+ int ret;
+
+ if (system("modprobe -r ubi"))
+ error_exit("Failed to unload UBI module");
+
if (system(ubi_module_load_string) != 0)
error_exit("Failed to load UBI module");
sleep(1);
generated by cgit v1.2.3 (git 2.39.1) at 2024-11-22 16:28:41 +0000