kernel/linux.git/tools/bootconfig/main.c, branch v6.1.176

bootconfig: Fix negative seeks on 32-bit with LFS enabled

2026-06-19T11:37:33+00:00

commit 729dc340a4ed1267774fc8518284e976e2210bdc upstream. Commit 26dda5769509 "tools/bootconfig: Cleanup bootconfig footer size calculations" replaced some expressions of type int with the BOOTCONFIG_FOOTER_SIZE macro, which expands to an expression of type size_t, which is unsigned. On 32-bit architectures with LFS enabled (i.e. off_t is 64-bit), the seek offset of -BOOTCONFIG_FOOTER_SIZE now turns into a positive value. Fix this by casting the size to off_t before negating it. Just in case someone changes BOOTCONFIG_MAGIC_LEN to have type size_t later, do the same thing to the seek offset of -BOOTCONFIG_MAGIC_LEN. Link: https://lore.kernel.org/all/aKHlevxeg6Y7UQrz@decadent.org.uk/ Fixes: 26dda5769509 ("tools/bootconfig: Cleanup bootconfig footer size calculations") Signed-off-by: Ben Hutchings Signed-off-by: Masami Hiramatsu (Google) Signed-off-by: Greg Kroah-Hartman

tools/bootconfig: Fix buf leaks in apply_xbc

2026-06-19T11:36:53+00:00

[ Upstream commit f42d01aadcedd7bbf4f9a466cabe25c1781dedad ] If data calloc failed, free the buf before return. Link: https://lore.kernel.org/all/20260520030126.147782-1-lihongtao@kylinos.cn/ Fixes: 950313ebf79c ("tools: bootconfig: Add bootconfig command") Signed-off-by: Hongtao Lee Signed-off-by: Masami Hiramatsu (Google) Signed-off-by: Sasha Levin

tools/bootconfig: Cleanup bootconfig footer size calculations

2026-06-19T11:36:53+00:00

[ Upstream commit 26dda57695090e05c1a99c3e8f802f862d1ac474 ] There are many same pattern of 8 + BOOTCONFIG_MAGIC_LEN for calculating the size of bootconfig footer. Use BOOTCONFIG_FOOTER_SIZE macro to clean up those magic numbers. Link: https://lore.kernel.org/all/175211425693.2591046.16029516706923643510.stgit@mhiramat.tok.corp.google.com/ Signed-off-by: Masami Hiramatsu (Google) Stable-dep-of: f42d01aadced ("tools/bootconfig: Fix buf leaks in apply_xbc") Signed-off-by: Sasha Levin

tools/bootconfig: fix fd leak in load_xbc_file() on fstat failure

2026-03-25T10:03:23+00:00

[ Upstream commit 3b2c2ab4ceb82af484310c3087541eab00ea288b ] If fstat() fails after open() succeeds, the function returns without closing the file descriptor. Also preserve errno across close(), since close() may overwrite it before the error is returned. Link: https://lore.kernel.org/all/20260318155847.78065-3-objecting@objecting.org/ Fixes: 950313ebf79c ("tools: bootconfig: Add bootconfig command") Signed-off-by: Josh Law Signed-off-by: Masami Hiramatsu (Google) Signed-off-by: Sasha Levin

tools/bootconfig: Fix the wrong format specifier

2025-02-21T12:49:20+00:00

[ Upstream commit f6ab7384d554ba80ff4793259d75535874b366f5 ] Use '%u' instead of '%d' for unsigned int. Link: https://lore.kernel.org/all/20241105011048.201629-1-luoyifan@cmss.chinamobile.com/ Fixes: 973780011106 ("tools/bootconfig: Suppress non-error messages") Signed-off-by: Luo Yifan Signed-off-by: Masami Hiramatsu (Google) Signed-off-by: Sasha Levin

bootconfig: Cleanup dummy headers in tools/bootconfig

2021-10-11T02:16:02+00:00

Cleanup dummy headers in tools/bootconfig/include except for tools/bootconfig/include/linux/bootconfig.h. For this change, I use __KERNEL__ macro to split kernel header #include and introduce xbc_alloc_mem() and xbc_free_mem(). Link: https://lkml.kernel.org/r/163187299574.2366983.18371329724128746091.stgit@devnote2 Signed-off-by: Masami Hiramatsu Signed-off-by: Steven Rostedt (VMware)

bootconfig: Replace u16 and u32 with uint16_t and uint32_t

2021-10-11T00:44:05+00:00

Replace u16 and u32 with uint16_t and uint32_t so that the tools/bootconfig only needs . Link: https://lkml.kernel.org/r/163187298835.2366983.9838262576854319669.stgit@devnote2 Signed-off-by: Masami Hiramatsu Signed-off-by: Steven Rostedt (VMware)

tools/bootconfig: Print all error message in stderr

2021-10-11T00:44:05+00:00

Print all error message in stderr. This also removes unneeded tools/bootconfig/include/linux/printk.h. Link: https://lkml.kernel.org/r/163187298106.2366983.15210300267326257397.stgit@devnote2 Signed-off-by: Masami Hiramatsu Signed-off-by: Steven Rostedt (VMware)

bootconfig: Rename xbc_destroy_all() to xbc_exit()

2021-10-11T00:44:05+00:00

Avoid using this noisy name and use more calm one. This is just a name change. No functional change. Link: https://lkml.kernel.org/r/163187295918.2366983.5231840238429996027.stgit@devnote2 Signed-off-by: Masami Hiramatsu Signed-off-by: Steven Rostedt (VMware)

bootconfig: Add xbc_get_info() for the node information

2021-10-11T00:43:53+00:00

Add xbc_get_info() API which allows user to get the number of used xbc_nodes and the size of bootconfig data. This is also useful for checking the bootconfig is initialized or not. Link: https://lkml.kernel.org/r/163177340877.682366.4360676589783197627.stgit@devnote2 Signed-off-by: Masami Hiramatsu Signed-off-by: Steven Rostedt (VMware)